EN-304-617.md.backup

6. Test process or container isolation with separate execution contexts
7. Verify network isolation prevents cross-tenant communication
8. Test strict tenant boundaries in identity and authentication systems
9. Verify separate audit logs per tenant with no cross-tenant access
10. Test separate backup and recovery per tenant
11. Per-tenant encryption keys implemented
12. Data-layer access control enforcement
13. Separate database schemas or namespaces
14. Query result filtering prevents cross-tenant data
15. Resource quotas enforced per tenant
16. Process/container isolation per tenant
17. Network isolation between tenants
18. Identity system tenant boundary enforcement
19. Separate audit logs per tenant
20. Tenant-specific backup/recovery and configuration

**Pass Criteria**: Per-tenant encryption AND data-layer access controls AND separate schemas AND query filtering AND resource quotas AND process isolation AND network isolation AND identity boundaries AND separate audit logs AND separate backup/recovery AND penetration testing AND documentation complete

**Fail Criteria**: Shared encryption OR inadequate access controls OR shared schemas OR cross-tenant queries OR no quotas OR shared processes OR no network isolation OR weak identity boundaries OR shared logs OR shared backups OR no penetration testing OR incomplete documentation

**Evidence**: Multi-tenancy architecture documentation, per-tenant encryption verification, access control testing, database schema isolation verification, query filtering tests, resource quota enforcement testing, process isolation verification, network isolation testing, identity boundary testing, audit log separation verification, backup/recovery isolation testing, penetration test reports

**References**:

- Multi-Tenancy Security: https://csrc.nist.gov/publications/detail/sp/800-144/final
- Cloud Isolation: https://aws.amazon.com/compliance/data-privacy-faq/
- Tenant Isolation Patterns: https://docs.microsoft.com/en-us/azure/architecture/guide/multitenant/considerations/tenancy-models

### Assessment: RDPS-REQ-45 (RDPS security incident response procedures)

**Reference**: RDPS-REQ-45 - Browser shall provide incident response procedures for RDPS breaches (RDPS-3 requirement)

**Given**: A conformant browser with RDPS-3 capability requiring documented incident response capabilities for security breaches

**Task**: This assessment verifies that browsers have documented, tested, and operationalized incident response procedures for RDPS security incidents to enable rapid detection, containment, investigation, remediation, and recovery from security breaches. Effective incident response minimizes damage from security incidents, reduces recovery time and costs, preserves forensic evidence for investigation and legal proceedings, and satisfies regulatory breach notification requirements (GDPR 72-hour notification, state breach laws, contractual obligations). The browser manufacturer must document comprehensive incident response procedures following established frameworks (NIST SP 800-61, SANS Incident Response, ISO 27035) including incident classification criteria (severity levels, impact categories), escalation procedures with clear roles and responsibilities, containment strategies (isolate affected systems, revoke credentials, block malicious traffic), investigation procedures (log analysis, forensic evidence collection, root cause analysis), remediation steps (patch vulnerabilities, restore from backups, implement additional controls), and recovery procedures (verify security before restoration, monitor for recurrence). The documentation must include specific RDPS incident scenarios: unauthorized data access, data exfiltration, ransomware or data destruction, account compromise, infrastructure compromise, denial of service, insider threats, and supply chain compromise. Each scenario must have scenario-specific response procedures, estimated response timelines, required resources and personnel, communication templates for user notification, and regulatory notification requirements. The implementation must include 24/7 incident response capability with on-call security team, automated incident detection and alerting integrated with SIEM systems, incident tracking and management system (ticketing, timeline documentation, evidence preservation), and regular incident response drills and tabletop exercises (minimum annually). Post-incident procedures must include lessons learned documentation, root cause analysis, control improvements, and incident metrics tracking (mean time to detect, mean time to respond, mean time to recover). Users must be notified of security incidents affecting their data according to regulatory timelines, with clear information about incident scope, impact, remediation actions, and protective measures users should take.

**Verification**:

1. Verify comprehensive incident response procedures documented following established frameworks
2. Test incident classification criteria and escalation procedures defined
3. Verify containment, investigation, remediation, and recovery procedures documented
4. Test RDPS-specific incident scenarios documented with response procedures
5. Verify 24/7 incident response capability with on-call security team
6. Test automated incident detection and alerting integrated with monitoring
7. Verify incident tracking and management system implemented
8. Test regular incident response drills performed (minimum annually)
9. Verify post-incident lessons learned and root cause analysis documented
10. Test that users notified of incidents according to regulatory timelines
11. Comprehensive IR procedures documented (NIST, SANS, ISO frameworks)
12. Incident classification and escalation procedures defined
13. Containment, investigation, remediation, recovery procedures
14. RDPS-specific incident scenarios with response plans
15. 24/7 incident response capability
16. Automated detection and alerting
17. Incident tracking system
18. Regular IR drills and exercises (annual minimum)
19. Post-incident analysis and improvements
20. User notification within regulatory timelines

**Pass Criteria**: Comprehensive documented procedures following frameworks AND incident classification AND RDPS-specific scenarios AND 24/7 capability AND automated detection AND tracking system AND regular drills (annual minimum) AND post-incident analysis AND regulatory-compliant user notification AND documentation complete

**Fail Criteria**: No documented procedures OR no classification OR generic scenarios only OR no 24/7 capability OR manual detection OR no tracking OR no drills OR no post-incident analysis OR delayed/missing user notification OR incomplete documentation

**Evidence**: Incident response procedure documentation, incident classification matrix, RDPS scenario playbooks, on-call schedule documentation, incident detection system configuration, incident tracking system, drill schedules and reports, post-incident review documentation, user notification templates and timelines, regulatory compliance verification

**References**:

- NIST Incident Response: https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-61r2.pdf
- SANS Incident Response: https://www.sans.org/white-papers/33901/
- GDPR Breach Notification: https://gdpr.eu/article-33-notification-of-a-personal-data-breach-to-the-supervisory-authority/

### Assessment: RDPS-REQ-46 (RDPS access revocation mechanisms)

**Reference**: RDPS-REQ-46 - Browser shall implement RDPS access revocation mechanisms (RDPS-3 requirement)

**Given**: A conformant browser with RDPS-3 capability requiring rapid access revocation for compromised accounts or terminated users

**Task**: This assessment verifies that browsers implement comprehensive and rapid access revocation mechanisms for RDPS systems, enabling immediate termination of access when accounts are compromised, users terminated, devices lost or stolen, or security policies violated. Access revocation is critical for limiting damage from compromised credentials, preventing unauthorized access by former employees or contractors, addressing insider threats, and responding to security incidents. The browser must implement multiple revocation mechanisms operating at different layers: authentication token revocation (invalidating OAuth tokens, API keys, session tokens, refresh tokens immediately across all systems), credential revocation (disabling passwords, certificates, biometric authentication), device revocation (blocking specific devices from accessing RDPS regardless of credentials), and user account suspension or deletion (comprehensive access termination). Revocation must be immediate and effective within seconds to minutes across all RDPS components including primary services, backup systems, cached authentication, and edge locations. The implementation must prevent revoked access from being restored through cached credentials, expired but still-valid tokens, or failover systems with stale authentication state. The browser must support both individual revocation (single user, device, or token) and bulk revocation (all users from a compromised organization, all sessions during security incident). Administrative interfaces must enable authorized personnel to initiate revocation through multiple channels (web console, API, mobile app, emergency procedures), verify revocation effectiveness, and monitor for revocation bypass attempts. The system must maintain audit trails of all revocation events including who initiated revocation, reason for revocation, timestamp, affected entities, and verification of effectiveness. Automated revocation triggers must respond to security events (suspicious login patterns, impossible travel, brute force attacks, malware detection) by automatically revoking access and notifying administrators. Users must be notified when their access is revoked (unless notification would compromise security investigation), understand the reason, and know how to restore access if revocation was erroneous. Enterprise administrators must be able to configure revocation policies, set automatic revocation triggers, and generate reports on revocation events.

**Verification**:

1. Verify multiple revocation mechanisms implemented (tokens, credentials, devices, accounts)
2. Test that revocation effective within seconds to minutes across all RDPS components
3. Verify revoked access cannot be restored through cached credentials or stale state
4. Test individual and bulk revocation capabilities
5. Verify administrative interfaces enable revocation through multiple channels
6. Test revocation effectiveness verification mechanisms
7. Verify audit trails maintained for all revocation events
8. Test automated revocation triggers respond to security events
9. Verify user notification of revocation (when appropriate)
10. Test enterprise administrator configuration of revocation policies
11. Multiple revocation mechanisms at different layers
12. Immediate revocation (seconds to minutes) across all components
13. Prevention of cached credential bypass
14. Individual and bulk revocation supported
15. Multi-channel administrative revocation interfaces
16. Revocation effectiveness verification
17. Comprehensive revocation audit trails
18. Automated security-event-triggered revocation
19. User notification (when appropriate)
20. Enterprise policy configuration and reporting

**Pass Criteria**: Multiple revocation mechanisms AND immediate effectiveness (seconds to minutes) AND no cached bypass AND individual/bulk revocation AND multi-channel interfaces AND effectiveness verification AND audit trails AND automated triggers AND user notification AND enterprise policies AND documentation complete

**Fail Criteria**: Single mechanism only OR delayed revocation OR cached bypass possible OR limited revocation scope OR single channel only OR no verification OR no audit trails OR no automation OR no user notification OR no enterprise policies OR incomplete documentation

**Evidence**: Revocation mechanism documentation, revocation latency measurements across all components, cached credential bypass testing, bulk revocation testing, administrative interface documentation, effectiveness verification testing, audit trail examples, automated trigger configuration, user notification templates, enterprise policy documentation

**References**:

- OAuth Token Revocation: https://datatracker.ietf.org/doc/html/rfc7009
- Identity and Access Management: https://csrc.nist.gov/projects/identity-and-access-management
- Access Revocation Best Practices: https://www.microsoft.com/en-us/security/business/identity-access/azure-ad-privileged-identity-management

### Assessment: RDPS-REQ-47 (RDPS transparency reporting for data access)

**Reference**: RDPS-REQ-47 - Browser shall provide transparency reporting for RDPS data access (RDPS-3 requirement)

**Given**: A conformant browser with RDPS-3 capability requiring transparent reporting of data access for user trust and regulatory compliance

**Task**: This assessment verifies that browsers provide comprehensive transparency reporting for RDPS data access, enabling users and regulators to understand who accesses their data, when, why, and under what legal authority. Transparency reporting builds user trust, demonstrates regulatory compliance, enables accountability for data access decisions, and supports data subject rights under privacy regulations (GDPR Article 15 right of access, CCPA consumer rights). The browser must provide user-facing transparency interfaces showing all access to their RDPS data including browser client access (normal user operations), administrative access (customer support, system maintenance, security investigations), third-party access (lawful disclosure to government authorities, service providers, partners), and automated access (backup systems, analytics, security scanning). Each transparency report entry must include sufficient detail: timestamp (precise to second, UTC), accessor identity (user, administrator, system, legal authority), access type (read, write, delete, export), data categories accessed, legal or operational justification, and duration of access. The implementation must enable users to access their transparency reports on demand through browser settings or web interface, download reports in standard formats (PDF, CSV, JSON) for personal records or regulatory submission, and configure notifications for specific access types (administrative access, third-party disclosure, unusual patterns). For government data requests, the browser should provide transparency reporting on request volumes, types, legal authorities invoked, data disclosed, and requests challenged or rejected (where legally permissible). Enterprise transparency reporting must aggregate access patterns across the organization, identify anomalous access requiring investigation, and support compliance audits. The system must balance transparency with security by avoiding disclosure of specific security mechanisms or vulnerabilities, protecting other users' privacy when showing aggregate statistics, and complying with legal restrictions on disclosure (ongoing investigations, national security letters). Transparency reports must be generated efficiently without significant performance impact, cover reasonable retention periods (minimum 1 year), and be protected against tampering or deletion. Users must be educated about transparency reporting capabilities, how to access their reports, and how to report concerns about unauthorized access.

**Verification**:

1. Verify user-facing transparency interfaces showing all RDPS data access
2. Test that reports include browser client, administrative, third-party, and automated access
3. Verify each entry includes timestamp, accessor, type, data categories, justification, duration
4. Test that users can access transparency reports on demand
5. Verify download capabilities in standard formats (PDF, CSV, JSON)
6. Test user-configurable notifications for specific access types
7. Verify government data request transparency reporting (where legally permissible)
8. Test enterprise aggregate access reporting with anomaly identification
9. Verify balance between transparency and security (no security mechanism disclosure)
10. Test efficient report generation with minimal performance impact
11. User-facing transparency interfaces implemented
12. Comprehensive access coverage (client, admin, third-party, automated)
13. Sufficient detail in each report entry (timestamp, accessor, type, categories, justification)
14. On-demand user access to reports
15. Standard format downloads available
16. User-configurable access notifications
17. Government request transparency (where legal)
18. Enterprise aggregate reporting with anomaly detection
19. Security and privacy balanced appropriately
20. Reports retained for minimum 1 year with tampering protection

**Pass Criteria**: Comprehensive transparency interfaces AND all access types covered AND sufficient entry detail AND on-demand access AND standard format downloads AND user notifications AND government request reporting (where legal) AND enterprise reporting AND appropriate security/privacy balance AND retention (1 year minimum) AND documentation complete

**Fail Criteria**: Limited transparency OR missing access types OR insufficient detail OR no on-demand access OR no downloads OR no notifications OR no government reporting OR no enterprise reporting OR security/privacy imbalance OR short retention OR incomplete documentation

**Evidence**: Transparency interface documentation, access type coverage assessment, report entry examples, user access mechanism testing, download format verification, notification configuration testing, government request reports (if available), enterprise reporting examples, security/privacy review, retention verification, user education materials

**References**:

- GDPR Article 15 Right of Access: https://gdpr.eu/article-15-right-of-access/
- Transparency Reporting: https://www.eff.org/issues/transparency
- Google Transparency Report: https://transparencyreport.google.com/

### Assessment: RDPS-REQ-48 (Forward secrecy for RDPS communications)

**Reference**: RDPS-REQ-48 - Browser shall implement forward secrecy for RDPS communications (RDPS-3 requirement)

**Given**: A conformant browser with RDPS-3 capability requiring forward secrecy protection for remote data processing communications

**Task**: This assessment verifies that browsers implement perfect forward secrecy (PFS) or forward secrecy (FS) for all RDPS communications, ensuring that compromise of long-term cryptographic keys (server private keys, authentication credentials) cannot decrypt past communication sessions. Forward secrecy protects historical communications from retrospective decryption if keys are later compromised through server breach, key theft, legal compulsion, or cryptanalysis. The browser must implement forward secrecy through ephemeral key exchange mechanisms where session keys are generated fresh for each connection and destroyed after use, never stored long-term, and cannot be derived from long-term keys. Implementation must use forward-secret cipher suites in TLS 1.3 (all cipher suites provide forward secrecy) or TLS 1.2 (ECDHE-RSA, ECDHE-ECDSA, DHE-RSA cipher suites), prioritize elliptic curve Diffie-Hellman ephemeral (ECDHE) over traditional DHE for performance, and disable non-forward-secret cipher suites (RSA key exchange, static DH) in RDPS communications. The browser must verify that RDPS endpoints support and prefer forward-secret cipher suites, refuse connections to endpoints that only support non-forward-secret ciphers (or warn users prominently), and log cipher suite selection for security auditing. Key material must be securely destroyed after session termination with cryptographic erasure (overwriting memory with random data), prevention of key material exposure through core dumps or swap files, and immediate destruction on session termination without delay. The implementation must resist downgrade attacks attempting to force use of weaker non-forward-secret ciphers through protocol version negotiation attacks, cipher suite manipulation, or man-in-the-middle intervention. Enterprise administrators must be able to verify forward secrecy enforcement, monitor cipher suite usage across RDPS connections, and configure policies requiring forward secrecy for all connections. Documentation must explain forward secrecy benefits to users, technical implementation details for developers, and compliance with regulatory requirements (GDPR encryption requirements, NIST cryptographic standards, PCI DSS).

**Verification**:

1. Verify forward-secret cipher suites implemented for all RDPS communications
2. Test TLS 1.3 used (all cipher suites provide forward secrecy) or TLS 1.2 with ECDHE/DHE
3. Verify ECDHE prioritized over DHE for performance
4. Test that non-forward-secret cipher suites (RSA key exchange) disabled
5. Verify browser checks RDPS endpoint support for forward-secret ciphers
6. Test browser refuses or warns when endpoint lacks forward secrecy support
7. Verify cipher suite selection logged for security auditing
8. Test key material securely destroyed after session termination
9. Verify resistance to downgrade attacks forcing weaker ciphers
10. Test enterprise administrators can verify and monitor cipher suite usage
11. Forward-secret cipher suites implemented (ECDHE, DHE)
12. TLS 1.3 or TLS 1.2 with FS cipher suites
13. ECDHE prioritized for performance
14. Non-FS cipher suites disabled (RSA key exchange)
15. Endpoint forward secrecy verification
16. Connection refusal or prominent warnings for non-FS endpoints
17. Cipher suite selection logging
18. Secure key destruction after sessions
19. Downgrade attack resistance
20. Enterprise verification, monitoring, and policy enforcement

**Pass Criteria**: Forward-secret cipher suites for all RDPS AND TLS 1.3 or TLS 1.2 with ECDHE/DHE AND ECDHE prioritized AND non-FS disabled AND endpoint verification AND warnings/refusal AND logging AND secure key destruction AND downgrade resistance AND enterprise monitoring AND documentation complete

**Fail Criteria**: Non-FS cipher suites allowed OR no TLS 1.3 and weak TLS 1.2 OR DHE without ECDHE OR RSA key exchange enabled OR no endpoint verification OR silent non-FS acceptance OR no logging OR insecure key handling OR downgrade vulnerable OR no enterprise monitoring OR incomplete documentation

**Evidence**: Cipher suite configuration documentation, TLS connection testing showing FS cipher suites, endpoint verification testing, non-FS endpoint handling tests, cipher suite logging examples, key destruction verification, downgrade attack testing, enterprise monitoring interface documentation

**References**:

- Perfect Forward Secrecy: https://en.wikipedia.org/wiki/Forward_secrecy
- TLS 1.3 Specification: https://datatracker.ietf.org/doc/html/rfc8446
- OWASP TLS Cipher String Cheat Sheet: https://cheatsheetseries.owasp.org/cheatsheets/TLS_Cipher_String_Cheat_Sheet.html

### Assessment: RDPS-REQ-49 (User notification of RDPS security events)

**Reference**: RDPS-REQ-49 - Browser shall provide user notification of RDPS security events (RDPS-3 requirement)

**Given**: A conformant browser with RDPS-3 capability requiring user notification of security-relevant events

**Task**: This assessment verifies that browsers implement comprehensive user notification systems for RDPS security events, keeping users informed about security-relevant activities affecting their data and enabling rapid response to potential security incidents. User notification empowers users to detect unauthorized access, identify suspicious activities, respond to security incidents, and exercise their rights under privacy regulations. The browser must notify users of critical security events including new device or location access to RDPS (sign-in from new device, unusual geographic location, impossible travel), authentication events (successful authentication, failed authentication attempts, password changes, two-factor authentication changes), data access events (administrative access to user data, third-party data disclosure, data export or download, unusual access patterns), security configuration changes (encryption settings modified, sharing permissions changed, account recovery settings updated), security incidents (detected breach, suspicious activity, malware detection, account compromise suspected), and data lifecycle events (data deletion, backup completion, retention policy changes). Notifications must be delivered through multiple channels with user-configurable preferences: in-browser notifications (non-intrusive, actionable), email notifications (detailed information, immediate for critical events), mobile push notifications (when mobile app available, time-sensitive events), and SMS notifications (for critical events, opt-in only due to cost). Each notification must provide sufficient context for users to assess risk: what event occurred, when it occurred, what device or location involved, what data affected, what action user should take, and how to report false alarms or actual security incidents. Notification timing must be appropriate to event severity: immediate notifications (within minutes) for critical events (suspected compromise, new device access), near-real-time (within hours) for important events (administrative access, configuration changes), and daily or weekly digests for routine events (normal access patterns, backup completion). The implementation must prevent notification fatigue through intelligent aggregation (combining related events, suppressing duplicate notifications), risk-based prioritization (highlighting critical events), and user control over notification frequency and channels. Users must be able to review notification history, configure notification preferences, and test notification delivery. Enterprise administrators must be able to configure organization-wide notification policies while respecting individual user preferences where appropriate.

**Verification**:

1. Verify notifications for critical security events (new device, location, authentication)
2. Test notifications for data access events (administrative access, third-party disclosure)
3. Verify notifications for security configuration changes
4. Test notifications for security incidents and data lifecycle events
5. Verify multiple delivery channels (in-browser, email, mobile push, SMS)
6. Test user-configurable notification preferences
7. Verify sufficient context in each notification (what, when, where, data affected, actions)
8. Test appropriate notification timing (immediate for critical, near-real-time for important)
9. Verify intelligent aggregation and risk-based prioritization prevent fatigue
10. Test notification history review and preference configuration
11. Critical security event notifications implemented
12. Data access and configuration change notifications
13. Security incident and data lifecycle notifications
14. Multiple delivery channels with user preferences
15. Sufficient context in notifications
16. Appropriate timing (immediate, near-real-time, digest)
17. Intelligent aggregation preventing notification fatigue
18. Risk-based prioritization highlighting critical events
19. Notification history and preference management
20. Enterprise policy configuration respecting user preferences

**Pass Criteria**: Comprehensive security event coverage AND multiple delivery channels AND user-configurable preferences AND sufficient context AND appropriate timing AND intelligent aggregation AND risk prioritization AND notification history AND user preference management AND enterprise policies AND documentation complete

**Fail Criteria**: Limited event coverage OR single channel only OR no user preferences OR insufficient context OR inappropriate timing OR no aggregation (fatigue) OR no prioritization OR no history OR no preference management OR no enterprise policies OR incomplete documentation

**Evidence**: Security event notification catalog, delivery channel documentation, notification preference UI, notification content examples, timing configuration, aggregation and prioritization algorithms, notification history interface, enterprise policy documentation, user education materials

**References**:

- Security Notification Best Practices: https://www.owasp.org/index.php/Security_Notifications
- User Notification Design: https://material.io/design/platform-guidance/android-notifications.html
- GDPR Breach Notification to Individuals: https://gdpr.eu/article-34-communication-of-a-personal-data-breach-to-the-data-subject/

### Assessment: RDPS-REQ-50 (Service discontinuation and data migration documentation)

**Reference**: RDPS-REQ-50 - Browser shall document service discontinuation and data migration procedures (RDPS-3 requirement)

**Given**: A conformant browser with RDPS-3 capability requiring documented procedures for service discontinuation scenarios

**Task**: This assessment verifies that browsers document and implement comprehensive procedures for RDPS service discontinuation and data migration, protecting user data and interests if the manufacturer discontinues the RDPS service, sells the business, declares bankruptcy, or fundamentally changes the service. Service discontinuation procedures address vendor lock-in concerns, support data portability rights (GDPR Article 20), enable business continuity for enterprise users, and build user trust through commitment to data preservation regardless of business circumstances. The browser manufacturer must document service discontinuation procedures including advance notification timelines (minimum 90 days for consumer services, 180 days for enterprise services, longer for critical infrastructure), data export capabilities in standard formats (JSON, XML, CSV for structured data; original formats for documents and media), data migration assistance (documentation, tools, support for transferring to alternative services), service transition period (continued read-only access during migration, extended access for enterprise customers), data deletion procedures after service termination (secure deletion with certificate of destruction, option for users to retain copies), and legal obligations continuation (privacy commitments, security obligations during transition). The documentation must address various discontinuation scenarios: voluntary service discontinuation (strategic business decision, service evolution), acquisition or merger (service integration or shutdown), bankruptcy or insolvency (trustee obligations, asset liquidation), regulatory prohibition (compliance failure, market exit), and force majeure (catastrophic failure, inability to continue). For each scenario, documentation must specify notification mechanisms, timeline modifications if any, user rights and remedies, data handling procedures, and dispute resolution processes. The implementation must enable users to export all their data at any time (not just during discontinuation), provide export in open standard formats supporting import to competing services, include all user data and metadata (not just primary content), and verify export completeness and integrity. Enterprise customers must receive enhanced protections including longer notification periods, dedicated migration support, option to acquire source code or hosting infrastructure (escrow arrangements), and service level commitments during transition. Users must be educated about data export capabilities, disaster recovery recommendations (maintaining personal backups), and vendor lock-in risks. The browser should participate in data portability initiatives and standards enabling seamless migration between services.

**Verification**:

1. Verify documented service discontinuation procedures including notification timelines
2. Test that minimum notification periods specified (90 days consumer, 180 days enterprise)
3. Verify data export capabilities in standard formats (JSON, XML, CSV, original formats)
4. Test data migration assistance documentation and tools
5. Verify service transition period with continued read-only access
6. Test data deletion procedures after termination with secure deletion
7. Verify documentation addresses various discontinuation scenarios
8. Test that users can export all their data at any time (not just during discontinuation)
9. Verify export includes all user data and metadata with completeness verification
10. Test enterprise enhanced protections (longer periods, dedicated support, escrow)
11. Service discontinuation procedures documented
12. Minimum notification timelines (90 days consumer, 180+ days enterprise)
13. Data export in standard open formats
14. Migration assistance documentation and tools
15. Transition period with continued access
16. Secure data deletion post-termination
17. Multiple discontinuation scenarios addressed
18. Anytime data export capability
19. Complete data and metadata export with verification
20. Enterprise enhanced protections (extended timelines, support, escrow options)

**Pass Criteria**: Comprehensive discontinuation documentation AND minimum notification periods (90/180 days) AND data export in standard formats AND migration assistance AND transition period AND secure deletion AND multiple scenarios addressed AND anytime export AND complete data export AND enterprise protections AND documentation complete

**Fail Criteria**: No discontinuation documentation OR insufficient notification periods OR proprietary export formats only OR no migration assistance OR no transition period OR insecure deletion OR single scenario only OR export only during discontinuation OR incomplete export OR no enterprise protections OR incomplete documentation

**Evidence**: Service discontinuation procedure documentation, notification timeline specifications, data export format documentation, migration tool documentation, transition period policies, data deletion procedures, discontinuation scenario documentation, anytime export verification, export completeness testing, enterprise protection agreements, data portability standards participation

**References**:

- GDPR Article 20 Data Portability: https://gdpr.eu/article-20-right-to-data-portability/
- Data Portability Standards: https://datatransferproject.dev/
- Service Discontinuation Best Practices: https://www.eff.org/deeplinks/2019/10/adversarial-interoperability

### Assessment: RDPS-REQ-51 (Enterprise administrator RDPS security policy configuration)

**Reference**: RDPS-REQ-51 - Enterprise administrators shall be able to configure RDPS security policies (RDPS-3 requirement)

**Given**: A conformant browser with RDPS-3 capability deployed in enterprise environments requiring centralized security policy management

**Task**: This assessment verifies that browsers provide comprehensive enterprise administration capabilities for configuring and enforcing RDPS security policies centrally, enabling organizations to meet regulatory requirements, enforce security standards, comply with internal policies, and maintain consistent security posture across all users. Enterprise policy configuration supports compliance frameworks (GDPR, HIPAA, SOX, PCI DSS, FedRAMP), security certifications (ISO 27001, SOC 2), regulatory audits, and organizational risk management. The browser must provide centralized policy management interfaces (web console, group policy, mobile device management, configuration management tools) enabling administrators to configure comprehensive RDPS security policies including authentication requirements (multi-factor authentication enforcement, password policies, certificate requirements, biometric authentication), encryption policies (minimum TLS versions, required cipher suites, end-to-end encryption requirements, hardware-backed key storage), data residency policies (allowed geographic regions, prohibited jurisdictions, cross-border transfer controls), access control policies (permitted/prohibited data access, administrative access restrictions, time-of-day restrictions, network location restrictions), monitoring and logging policies (required log verbosity, log retention periods, SIEM integration, compliance logging), incident response policies (notification requirements, escalation procedures, automated responses), and data lifecycle policies (retention periods, deletion procedures, backup requirements, data classification). Policy enforcement must be immediate and effective across all browser installations with policy distribution through secure channels, policy verification on each RDPS connection, policy violation prevention (blocking non-compliant operations), and policy compliance reporting. The implementation must support policy inheritance and override (organization-wide defaults, department-specific overrides, user-specific exceptions with justification), policy versioning and rollback (tracking policy changes, auditing policy modifications, reverting problematic policies), and policy testing capabilities (dry-run mode showing impact without enforcement). Enterprise administrators must have visibility into policy compliance through dashboards showing policy coverage, compliance metrics, violations detected, exceptions granted, and remediation status. The system must prevent policy tampering by end users while respecting individual privacy rights where appropriate (personal device policies vs corporate device policies). Documentation must provide comprehensive policy configuration guides, policy templates for common compliance frameworks, and integration guidance for enterprise identity and access management systems.

**Verification**:

1. Verify centralized policy management interfaces for enterprise administrators
2. Test authentication policy configuration (MFA, passwords, certificates, biometrics)
3. Verify encryption policy configuration (TLS versions, cipher suites, E2EE, hardware keys)
4. Test data residency policy configuration (geographic regions, cross-border controls)
5. Verify access control policy configuration (data access, admin access, restrictions)
6. Test monitoring and logging policy configuration (verbosity, retention, SIEM, compliance)
7. Verify incident response policy configuration (notifications, escalation, automation)
8. Test data lifecycle policy configuration (retention, deletion, backup, classification)
9. Verify immediate policy enforcement across all installations
10. Test policy compliance reporting and violation prevention
11. Centralized policy management interfaces available
12. Authentication policies configurable (MFA, passwords, certs, biometrics)
13. Encryption policies configurable (TLS, ciphers, E2EE, hardware)
14. Data residency policies configurable
15. Access control policies configurable
16. Monitoring and logging policies configurable
17. Incident response and data lifecycle policies configurable
18. Immediate policy enforcement across installations
19. Policy compliance dashboards with metrics and violation reporting
20. Policy inheritance, versioning, testing, and comprehensive documentation

**Pass Criteria**: Centralized management interfaces AND comprehensive policy categories (authentication, encryption, residency, access, monitoring, incident response, lifecycle) AND immediate enforcement AND compliance reporting AND policy inheritance/versioning AND testing capabilities AND tamper prevention AND documentation complete

**Fail Criteria**: No centralized management OR limited policy categories OR delayed enforcement OR no compliance reporting OR no inheritance/versioning OR no testing OR user tampering possible OR incomplete documentation

**Evidence**: Policy management interface documentation, authentication policy configuration testing, encryption policy testing, data residency policy testing, access control policy testing, monitoring policy testing, policy enforcement verification, compliance dashboard screenshots, policy inheritance testing, versioning and rollback testing, policy template documentation, integration guides

**References**:

- Chrome Enterprise Policies: https://chromeenterprise.google/policies/
- Microsoft Intune: https://docs.microsoft.com/en-us/mem/intune/
- NIST Enterprise Configuration Management: https://csrc.nist.gov/publications/detail/sp/800-70/rev-4/final

### Assessment: RDPS-REQ-52 (Fully offline browser operation without remote connectivity)

**Reference**: RDPS-REQ-52 - Browser shall operate fully offline without requiring remote connectivity (RDPS-0 requirement)

**Given**: A conformant browser claiming RDPS-0 capability (no remote data processing) for air-gapped or offline-only deployments

**Task**: This assessment verifies that browsers can operate completely offline without any remote connectivity, meeting requirements for air-gapped networks, classified environments, high-security facilities, regions with no internet access, and users prioritizing privacy and autonomy. Fully offline operation ensures the browser remains functional when network unavailable, does not degrade functionality due to lack of connectivity, protects against network-based attacks, preserves user privacy by preventing any data transmission, and meets regulatory requirements for isolated systems. The browser must provide all core functionality offline including rendering web content (HTML, CSS, JavaScript, images, media), running web applications (offline Progressive Web Apps, service workers, client-side processing), managing bookmarks and history, configuring browser settings, using developer tools, managing extensions (previously installed), password management (local storage only), and form autofill (local data only). The browser must not require network connectivity for installation (offline installer available), initial setup (no online activation or registration), license validation (perpetual license or no license required), feature activation (all features available without online verification), updates (manual update through offline media, or operate indefinitely without updates), security features (all security mechanisms functional offline), or user authentication (no online account required). The implementation must gracefully handle the absence of network without error messages, degraded functionality warnings, or repeated connection attempts that consume resources or annoy users. Documentation must clearly specify which features unavailable offline (web search, synchronization, online content), explain offline capabilities and limitations, and provide offline troubleshooting guidance. Installation packages must be complete offline installers containing all necessary components without requiring additional downloads during installation or first run.

**Verification**:

1. Verify browser installs completely offline using offline installer
2. Test that initial setup completes without network connectivity
3. Verify all core functionality works offline (rendering, JavaScript, apps, bookmarks, settings)
4. Test that security features function without network (sandbox, encryption, isolation)
5. Verify browser never attempts network connections when offline
6. Test that no error messages or warnings about missing network
7. Verify offline-capable web applications work correctly (PWAs, service workers)
8. Test that browser settings and configuration fully accessible offline
9. Verify developer tools fully functional offline
10. Test that browser operates indefinitely without updates or online validation
11. Complete offline installation with offline installer
12. No online activation or registration required
13. All core functionality operational offline
14. Security features fully functional without network
15. No network connection attempts when offline
16. No error messages or degraded functionality warnings
17. Offline web application support (PWAs, service workers)
18. All settings and configuration accessible offline
19. Developer tools fully functional offline
20. Indefinite offline operation without degradation

**Pass Criteria**: Complete offline installation AND no online activation AND all core functionality offline AND all security features offline AND no network attempts AND no error/warning messages AND offline web app support AND indefinite operation AND documentation complete

**Fail Criteria**: Requires online installation OR online activation required OR limited functionality offline OR security features require network OR network connection attempts OR error/warning messages OR no offline app support OR time-limited offline OR incomplete documentation

**Evidence**: Offline installer verification, offline installation testing, network monitoring showing zero connection attempts, functionality testing without network, security feature verification offline, error message audit, offline web app testing, long-term offline operation testing, documentation review

**References**:

- Offline Web Applications: https://developer.mozilla.org/en-US/docs/Web/Progressive_web_apps/Offline_Service_workers
- Air-Gapped System Security: https://csrc.nist.gov/glossary/term/air_gap
- Offline-First Design: https://offlinefirst.org/

### Assessment: RDPS-REQ-53 (All user data stored locally without remote synchronization)

**Reference**: RDPS-REQ-53 - All user data shall be stored locally without remote synchronization (RDPS-0 requirement)

**Given**: A conformant browser claiming RDPS-0 capability (no remote data processing) for local-only data storage

**Task**: This assessment verifies that browsers store all user data exclusively on local storage without any remote synchronization, backup, or cloud storage capabilities, ensuring complete user control over data, preventing unauthorized remote access, eliminating cloud provider risks, and meeting air-gapped environment requirements. Local-only storage protects user privacy by preventing data transmission to third parties, eliminates dependence on remote services, prevents data breaches through cloud compromise, and ensures data availability regardless of network connectivity. The browser must store all user data types locally including browsing history, bookmarks and favorites, saved passwords and credentials, form autofill data, cookies and site data, download history, search history, browser settings and preferences, installed extensions and their data, cached web content, offline web application data (service worker caches, IndexedDB, localStorage), certificate trust settings, and custom dictionary entries. All storage must use local file system locations (user profile directory, application data folders) with no remote endpoints configured, no synchronization protocols implemented, and no cloud storage integration. The browser must not provide remote synchronization features even as optional capabilities (no sync accounts, no cloud backup, no cross-device data sharing). Documentation must clearly state that all data remains local, explain data backup responsibilities (users must manually backup their profile directory), warn about data loss risks (device failure, disk corruption without backup), and provide data portability guidance (exporting and importing profiles across devices manually). The implementation must be verifiable through network monitoring (no data transmission observed), file system analysis (all data in local directories), and code review (no synchronization code present).

**Verification**:

1. Verify all user data types stored in local file system locations
2. Test that browsing history, bookmarks, passwords stored locally only
3. Verify form autofill, cookies, downloads, search history stored locally
4. Test that browser settings, extensions, cached content stored locally
5. Verify offline web app data (service workers, IndexedDB, localStorage) stored locally
6. Test that no remote endpoints configured for any data storage
7. Verify no synchronization protocols implemented (no sync code)
8. Test that browser provides no remote synchronization features (no sync accounts)
9. Verify network monitoring shows zero data transmission for user data
10. Test documentation clearly states local-only storage and backup responsibilities
11. All user data types stored locally (history, bookmarks, passwords, etc.)
12. Local file system storage locations only
13. No remote endpoints configured
14. No synchronization protocols present
15. No sync account or cloud backup features
16. Zero network transmission of user data (verified via monitoring)
17. Documentation states local-only storage
18. User backup responsibility explained
19. Data loss risk warnings provided
20. Data portability guidance (manual export/import)

**Pass Criteria**: All user data types local AND local file system storage AND no remote endpoints AND no sync protocols AND no sync features AND zero network transmission AND clear documentation AND backup guidance AND data loss warnings AND portability guidance

**Fail Criteria**: Any remote storage OR remote endpoints configured OR sync protocols present OR sync features available OR network data transmission OR unclear documentation OR no backup guidance OR no warnings OR no portability guidance

**Evidence**: File system analysis showing local-only storage, network monitoring showing zero user data transmission, code review showing no synchronization capabilities, documentation stating local-only storage with backup responsibilities, data portability documentation

**References**:

- Local Storage Privacy: https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage
- Air-Gapped Data Management: https://csrc.nist.gov/glossary/term/air_gap
- Data Backup Best Practices: https://www.cisa.gov/backup-basics

### Assessment: RDPS-REQ-54 (No telemetry, diagnostics, or usage data transmission)

**Reference**: RDPS-REQ-54 - Browser shall not transmit telemetry, diagnostics, or usage data to remote servers (RDPS-0 requirement)

**Given**: A conformant browser claiming RDPS-0 capability (no remote data processing) for privacy-preserving operation

**Task**: This assessment verifies that browsers do not collect or transmit any telemetry, diagnostics, crash reports, usage analytics, or statistical data to remote servers, ensuring complete user privacy, preventing data leakage, meeting air-gapped environment requirements, and eliminating tracking capabilities. Telemetry transmission risks include user profiling, behavior tracking, fingerprinting, metadata leakage revealing browsing habits, and potential privacy regulation violations. The browser must not transmit any data categories including usage analytics (page views, feature usage, session duration), performance metrics (rendering times, memory usage, CPU utilization), crash reports (stack traces, memory dumps, error logs), debugging information (console logs, JavaScript errors, network failures), feature adoption metrics (which features used, configuration choices), system information (OS version, hardware specifications, installed software), or network information (IP addresses, DNS queries, network timing). The implementation must have no telemetry infrastructure with no analytics SDKs or libraries included, no crash reporting services integrated, no remote logging endpoints configured, and no data collection code present. The browser must not provide telemetry even as opt-in functionality, as its mere presence creates privacy risks and maintenance burden. Documentation must clearly state no telemetry collection, explain privacy benefits, and confirm network isolation for user data. The implementation must be verifiable through network monitoring (no telemetry transmission observed), code review (no telemetry or analytics libraries), and binary analysis (no telemetry endpoints present in compiled code).

**Verification**:

1. Verify no usage analytics collected or transmitted (page views, feature usage, session duration)
2. Test that no performance metrics transmitted (rendering times, memory, CPU)
3. Verify no crash reports transmitted (stack traces, memory dumps, error logs)
4. Test that no debugging information transmitted (console logs, JavaScript errors)
5. Verify no feature adoption metrics transmitted (feature usage, configuration)
6. Test that no system information transmitted (OS version, hardware, installed software)
7. Verify no network information transmitted (IP addresses, DNS queries, timing)
8. Test that no analytics SDKs or libraries included in browser
9. Verify no crash reporting services integrated
10. Test network monitoring shows zero telemetry transmission
11. No usage analytics collection or transmission
12. No performance metrics transmission
13. No crash report transmission
14. No debugging information transmission
15. No feature or system information transmission
16. No analytics SDKs or libraries present
17. No crash reporting service integration
18. Zero telemetry transmission (verified via network monitoring)
19. Documentation states no telemetry
20. Code review confirms no telemetry infrastructure

**Pass Criteria**: Zero telemetry of all types (usage, performance, crashes, debugging, features, system) AND no analytics SDKs AND no crash reporting services AND zero network transmission AND clear documentation AND code review verification

**Fail Criteria**: Any telemetry transmission OR analytics SDKs present OR crash reporting integrated OR network telemetry observed OR unclear documentation OR unverified code

**Evidence**: Network monitoring showing zero telemetry transmission, code review showing no analytics or telemetry libraries, binary analysis showing no telemetry endpoints, documentation stating no telemetry, privacy policy confirmation

**References**:

- Privacy by Design: https://www.ipc.on.ca/wp-content/uploads/resources/7foundationalprinciples.pdf
- Telemetry Privacy Risks: https://www.eff.org/deeplinks/2019/10/privacy-badger-now-fights-more-tracking-embedded-tweets
- GDPR Telemetry: https://gdpr.eu/what-is-gdpr/

### Assessment: RDPS-REQ-55 (No degradation when network connectivity unavailable)

**Reference**: RDPS-REQ-55 - Browser shall function without degradation when network connectivity unavailable (RDPS-0 requirement)

**Given**: A conformant browser claiming RDPS-0 capability (no remote data processing) for reliable offline operation

**Task**: This assessment verifies that browsers provide identical functionality and performance whether network connectivity is available or unavailable, ensuring reliable operation in offline environments, air-gapped networks, intermittent connectivity scenarios, and situations where network unavailability should not impact user experience. No degradation means all features work identically offline, no reduced performance offline, no error messages or warnings, no feature limitations, and no user experience impact. The browser must provide full functionality offline including rendering all web content types (HTML, CSS, JavaScript, images, media, fonts), executing web applications and scripts, managing browsing features (tabs, windows, navigation, bookmarks, history), accessing browser settings and configuration, using developer tools, managing extensions and add-ons, password management and autofill, and local data storage and retrieval (cookies, localStorage, IndexedDB). The implementation must not check for network connectivity before enabling features, show connectivity-dependent UI elements or warnings, reduce performance when offline (no unnecessary polling or retry attempts), or time-limit offline functionality. The browser should gracefully handle network-dependent features (viewing online content, external links, web search) by providing clear messaging that specific content requires network access while emphasizing that browser functionality remains intact. Performance metrics (page load times, script execution, rendering speed, memory usage, CPU utilization) must be equivalent whether online or offline when testing with locally-cached content.

**Verification**:

1. Verify all rendering capabilities work identically offline (HTML, CSS, JS, images, media, fonts)
2. Test that web applications and scripts execute normally offline
3. Verify browsing features fully functional offline (tabs, windows, navigation, bookmarks, history)
4. Test browser settings and configuration accessible offline without limitations
5. Verify developer tools fully functional offline
6. Test extension management works offline (previously installed extensions)
7. Verify password management and autofill work offline with local data
8. Test local data storage operations work identically offline (cookies, localStorage, IndexedDB)
9. Verify no connectivity checks before enabling features
10. Test that no connectivity-dependent UI elements or degradation warnings shown
11. All rendering capabilities identical offline
12. Web applications execute normally offline
13. All browsing features functional offline
14. Settings and configuration fully accessible offline
15. Developer tools fully functional offline
16. Extension management operational offline
17. Password management and autofill work offline
18. Local storage operations identical offline
19. No connectivity checks gating features
20. Performance metrics equivalent online/offline (verified with cached content)

**Pass Criteria**: All features identical offline AND no performance reduction AND no error/warning messages AND no feature limitations AND no connectivity checks AND equivalent performance metrics AND clear documentation

**Fail Criteria**: Reduced functionality offline OR degraded performance offline OR error/warning messages OR limited features OR connectivity checks gating features OR slower offline performance OR unclear documentation

**Evidence**: Offline functionality testing for all features, performance benchmarking (online vs offline with cached content), network monitoring during offline operation, error message audit, feature availability audit, UI element inspection, performance metrics comparison

**References**:

- Offline-First Web Applications: https://offlinefirst.org/
- Service Worker Offline Support: https://developer.mozilla.org/en-US/docs/Web/Progressive_web_apps/Offline_Service_workers
- Progressive Enhancement: https://www.w3.org/wiki/Graceful_degradation_versus_progressive_enhancement

### Assessment: RDPS-REQ-56 (No remote authentication or authorization services required)

**Reference**: RDPS-REQ-56 - No remote authentication or authorization services shall be required (RDPS-0 requirement)

**Given**: A conformant browser claiming RDPS-0 capability (no remote data processing) for local-only authentication

**Task**: This assessment verifies that browsers do not require any remote authentication or authorization services for any browser functionality, ensuring the browser operates without dependency on external identity providers, authentication servers, or authorization services. Remote authentication dependencies create single points of failure, enable tracking through identity providers, require network connectivity, introduce privacy risks through third-party authentication, and prevent use in air-gapped or offline environments. The browser must not require remote authentication for browser installation and activation, accessing browser features and settings, using browser functionality (rendering, JavaScript execution, extensions), managing local user data (passwords, bookmarks, history), browser updates (accept manual updates without online validation), license validation (perpetual license or no license required), or any security features. The browser should support local authentication mechanisms for optional features like password manager master passwords (local verification only), parental controls or profiles (local password protection), browser lock features (local PIN or biometric), and extension installation restrictions (local administrator policies). All authentication and authorization must be performed locally using local credential storage (encrypted local database, OS credential manager without cloud sync), local policy enforcement (configuration files, registry settings, local policy database), and local validation (no remote server verification required). The implementation must work identically whether network available or unavailable, with no difference in authentication behavior based on connectivity. Documentation must clearly explain that no remote authentication required, describe local authentication mechanisms if available, and confirm that all authentication data remains local.

**Verification**:

1. Verify no remote authentication required for installation and activation
2. Test that all browser features accessible without online authentication
3. Verify browser functionality works without remote authorization services
4. Test local user data access requires no remote authentication
5. Verify manual updates work without online validation
6. Test license validation, if any, does not require remote servers
7. Verify all security features operate without remote authentication
8. Test optional local authentication mechanisms work offline (master passwords, profiles, locks)
9. Verify authentication data stored locally (encrypted database, OS credential manager)
10. Test identical authentication behavior whether online or offline
11. No remote authentication for installation/activation
12. All features accessible without online authentication
13. No remote authorization services required
14. Local data access without remote authentication
15. Manual updates without online validation
16. No remote license validation required
17. Security features independent of remote authentication
18. Optional local authentication works offline
19. Authentication data stored locally only
20. Identical online/offline authentication behavior

**Pass Criteria**: Zero remote authentication requirements AND all features accessible without authentication AND local authentication only (if any) AND identical online/offline behavior AND local credential storage AND clear documentation

**Fail Criteria**: Any remote authentication required OR features gated by online authentication OR remote authorization services OR different online/offline behavior OR cloud-synced credentials OR unclear documentation

**Evidence**: Installation testing without network, feature access testing offline, authentication flow analysis showing local-only verification, network monitoring showing no authentication traffic, credential storage analysis showing local-only storage, online/offline behavior comparison, documentation review

**References**:

- Local Authentication: https://developer.mozilla.org/en-US/docs/Web/API/Web_Authentication_API
- Air-Gapped Authentication: https://csrc.nist.gov/glossary/term/authentication
- Privacy-Preserving Authentication: https://www.w3.org/TR/webauthn-3/

### Assessment: RDPS-REQ-57 (Local-only operation capabilities and limitations documentation)

**Reference**: RDPS-REQ-57 - Browser shall document all local-only operation capabilities and limitations (RDPS-0 requirement)

**Given**: A conformant browser claiming RDPS-0 capability (no remote data processing) for transparent operation

**Task**: This assessment verifies that browsers provide comprehensive documentation of local-only operation capabilities and limitations, enabling users to understand what the browser can and cannot do without network connectivity, make informed decisions about browser suitability for their use case, and properly configure and use the browser in offline environments. Clear documentation builds trust, sets appropriate expectations, prevents user frustration from unexpected limitations, and supports evaluation for air-gapped or high-security deployments. The browser must document capabilities available offline including all rendering and display capabilities (supported web standards, media formats, font rendering), web application support (service workers, offline storage APIs, Progressive Web Apps), local data management (storage limits, backup procedures, data export), extension and add-on support (which extensions work offline, limitations), security features (offline operation of sandbox, encryption, isolation), developer tools (debugging, inspection, profiling offline), and performance characteristics (expected performance offline). The documentation must clearly state limitations and unavailable features including features requiring network connectivity (online web search, bookmark sync, extension installation, external content loading), features not supported (cloud storage integration, remote authentication, telemetry), data synchronization limitations (no cross-device sync, manual export/import required), and update mechanisms (manual updates only, no automatic update checking). Documentation must provide operational guidance including offline installation procedures (obtaining and verifying offline installers), data backup recommendations (frequency, procedures, verification), troubleshooting guidance (common offline issues, diagnostic procedures), and migration guidance (moving profiles between systems manually). The documentation format must be accessible offline (included in browser installation, PDF format, plain text) to support users in air-gapped environments who cannot access online documentation.

**Verification**:

1. Verify documentation comprehensively describes offline capabilities (rendering, apps, storage, extensions, security, dev tools)
2. Test that limitations clearly stated (features unavailable offline, no sync, manual updates)
3. Verify operational guidance provided (installation, backup, troubleshooting, migration)
4. Test documentation accessible offline (included with installation, PDF, plain text)
5. Verify supported web standards and features documented
6. Test that service worker and offline storage capabilities explained
7. Verify data management procedures documented (limits, backup, export)
8. Test extension compatibility and limitations clearly explained
9. Verify security feature offline operation documented
10. Test that offline installation procedures clearly described
11. Comprehensive offline capabilities documented (all feature categories)
12. Limitations and unavailable features clearly stated
13. Operational guidance provided (installation, backup, troubleshooting, migration)
14. Documentation accessible offline (bundled, PDF, plain text)
15. Supported web standards and features listed
16. Offline storage APIs and limits documented
17. Extension offline compatibility explained
18. Security feature offline operation confirmed
19. Data backup procedures detailed
20. Troubleshooting and migration guidance provided

**Pass Criteria**: Comprehensive capability documentation AND clear limitation statements AND operational guidance AND offline-accessible documentation AND web standards coverage AND storage documentation AND extension compatibility AND security documentation AND backup procedures AND troubleshooting guidance

**Fail Criteria**: Incomplete capability documentation OR unclear limitations OR no operational guidance OR online-only documentation OR missing standards coverage OR no storage documentation OR unclear extension support OR no security documentation OR no backup procedures OR no troubleshooting guidance

**Evidence**: Documentation completeness review covering all required areas, offline documentation accessibility verification (bundled docs, PDF availability), capability accuracy testing (verify documented features work as described), limitation verification (confirm stated limitations accurate), operational guidance evaluation (installation, backup, troubleshooting procedures)

**References**:

- Technical Documentation Best Practices: https://www.writethedocs.org/guide/
- Offline Documentation Standards: https://www.w3.org/TR/offline-webapps/
- Air-Gapped System Documentation: https://www.cisecurity.org/controls

### Assessment: RDPS-REQ-58 (User notification that no data leaves local system)

**Reference**: RDPS-REQ-58 - Users shall be informed that no data leaves the local system (RDPS-0 requirement)

**Given**: A conformant browser claiming RDPS-0 capability (no remote data processing) for transparent privacy protection

**Task**: This assessment verifies that browsers clearly and prominently inform users that no data leaves the local system, ensuring transparency about privacy protections, building user trust, meeting privacy regulation requirements for clear communication, and confirming the browser's commitment to local-only operation. User notification supports informed consent, enables users to verify privacy claims, differentiates privacy-focused browsers from cloud-dependent alternatives, and provides assurance for sensitive environments (corporate, government, healthcare, legal). The browser must inform users through multiple mechanisms including initial setup or first-run notification (clear statement during installation or first launch that all data remains local), browser settings interface (prominent privacy statement in settings describing local-only operation), about or help documentation (detailed explanation of no data transmission policy), privacy policy (legally binding commitment to local-only operation), and visual indicators (optional UI elements reinforcing local-only status). Notifications must use clear, non-technical language accessible to average users (avoid jargon, explain in plain language), be prominent and not buried in lengthy terms (highlight in visible locations), explain the benefits (enhanced privacy, offline operation, no dependency), and contrast with cloud-dependent alternatives (help users understand the difference). The browser should provide technical verification methods for advanced users including documentation of network monitoring procedures (how users can verify zero network traffic), verification tools built into browser (network activity monitor, diagnostic mode), and third-party verification references (independent security audits, code reviews). The implementation must be honest and accurate with no data transmission of any kind, no hidden exceptions or carve-outs, and no misleading privacy claims. Users must be able to easily access and understand the local-only privacy commitment at any time through browser UI, help documentation, and privacy policy.

**Verification**:

1. Verify clear notification during installation or first launch stating data remains local
2. Test prominent privacy statement in browser settings describing local-only operation
3. Verify about or help documentation explains no data transmission policy
4. Test privacy policy contains legally binding commitment to local-only operation
5. Verify optional visual indicators reinforcing local-only status
6. Test language used is clear and non-technical (accessible to average users)
7. Verify notifications prominent and visible (not buried in lengthy terms)
8. Test that benefits explained (privacy, offline operation, no dependency)
9. Verify documentation includes network monitoring procedures for user verification
10. Test browser provides verification tools (network activity monitor, diagnostic mode)
11. Initial setup notification stating data remains local
12. Prominent settings interface privacy statement
13. About/help documentation explaining policy
14. Privacy policy legal commitment to local-only operation
15. Clear, non-technical language used
16. Prominent and visible notifications
17. Benefits clearly explained
18. Contrast with cloud-dependent alternatives explained
19. Technical verification methods documented
20. Easy ongoing access to privacy commitments

**Pass Criteria**: Multiple notification mechanisms (setup, settings, docs, privacy policy) AND clear non-technical language AND prominent visibility AND benefits explained AND technical verification methods AND honest accurate claims AND easy ongoing access AND documentation complete

**Fail Criteria**: Single notification only OR technical jargon OR buried in terms OR benefits unexplained OR no verification methods OR inaccurate claims OR difficult to access OR incomplete documentation

**Evidence**: First-run notification screenshots, settings interface privacy statements, help documentation review, privacy policy legal commitment, language clarity assessment, notification prominence evaluation, verification method documentation, accuracy verification (network monitoring confirms zero transmission)

**References**:

- Privacy Notice Requirements: https://gdpr.eu/privacy-notice/
- Transparency and Consent: https://www.ftc.gov/business-guidance/privacy-security
- Privacy by Design: https://www.ipc.on.ca/wp-content/uploads/resources/7foundationalprinciples.pdf

### Assessment: RDPS-REQ-59 (All RDPS-1 requirements implemented for RDPS-2)

**Reference**: RDPS-REQ-59 - All RDPS-1 requirements shall be implemented for RDPS-2 capability (RDPS-2-REQ-1 requirement)

**Given**: A conformant browser claiming RDPS-2 capability (extended remote processing with sensitive data) that must also meet all RDPS-1 requirements

**Task**: This assessment verifies that browsers claiming RDPS-2 capability (extended remote processing for sensitive data) fully implement all RDPS-1 requirements as a baseline security foundation before adding RDPS-2-specific enhancements. RDPS-2 capability builds upon RDPS-1 by adding stronger security controls (encryption at rest, mutual TLS, redundancy, access controls, integrity verification), but must maintain all RDPS-1 baseline protections including documentation of offline functionality, data classification, encryption in transit (TLS 1.3+), certificate validation and pinning, retry mechanisms with exponential backoff, local caching, secure authentication, timeout controls, connectivity failure logging, graceful degradation, credential protection, rate limiting, and data validation. Compliance with this requirement ensures that browsers do not skip fundamental security controls when implementing advanced capabilities, maintain defense-in-depth through layered security, provide predictable security across capability levels, and enable incremental security enhancement (RDPS-1 as foundation, RDPS-2 as augmentation). The assessment must verify that all 15 RDPS-1 requirements are implemented and functional (RDPS-1-REQ-1 through RDPS-1-REQ-15), each requirement meets its specified criteria without degradation, RDPS-2 enhancements do not compromise RDPS-1 baseline security, and documentation clearly indicates RDPS-2 includes all RDPS-1 protections. The assessment should leverage assessments RDPS-REQ-1 through RDPS-REQ-15 results, verifying each passed before approving RDPS-2 claim, and ensuring no gaps or exceptions in RDPS-1 requirement implementation.

**Verification**:

1. Verify RDPS-1-REQ-1 implemented (offline functionality documented) per RDPS-REQ-1 assessment
2. Test RDPS-1-REQ-2 implemented (data classification) per RDPS-REQ-2 assessment
3. Verify RDPS-1-REQ-3 implemented (data criticality) per RDPS-REQ-3 assessment
4. Test RDPS-1-REQ-4 implemented (TLS 1.3+ encryption) per RDPS-REQ-4 assessment
5. Verify RDPS-1-REQ-5 implemented (certificate validation) per RDPS-REQ-5 assessment
6. Test RDPS-1-REQ-6 implemented (retry with backoff) per RDPS-REQ-6 assessment
7. Verify RDPS-1-REQ-7 implemented (local caching) per RDPS-REQ-7 assessment
8. Test RDPS-1-REQ-8 implemented (secure authentication) per RDPS-REQ-8 assessment
9. Verify RDPS-1-REQ-9 implemented (certificate pinning) per RDPS-REQ-9 assessment
10. Test RDPS-1-REQ-10 implemented (timeout controls) per RDPS-REQ-10 assessment
11. RDPS-1-REQ-11 implemented (failure logging) per RDPS-REQ-11
12. RDPS-1-REQ-12 implemented (graceful degradation) per RDPS-REQ-12
13. RDPS-1-REQ-13 implemented (credential protection) per RDPS-REQ-13
14. RDPS-1-REQ-14 implemented (rate limiting) per RDPS-REQ-14
15. RDPS-1-REQ-15 implemented (data validation) per RDPS-REQ-15
16. All 15 RDPS-1 requirements fully implemented
17. Each requirement meets specified criteria
18. RDPS-2 enhancements do not compromise RDPS-1 baseline
19. Documentation confirms RDPS-2 includes all RDPS-1 protections
20. No gaps or exceptions in RDPS-1 requirement implementation

**Pass Criteria**: All 15 RDPS-1 requirements fully implemented AND each meets specified criteria AND no degradation from RDPS-2 enhancements AND documentation confirms inclusion AND no gaps or exceptions

**Fail Criteria**: Any RDPS-1 requirement not implemented OR any requirement fails criteria OR RDPS-2 compromises RDPS-1 baseline OR documentation does not confirm inclusion OR gaps or exceptions present

**Evidence**: RDPS-REQ-1 through RDPS-REQ-15 assessment results (all pass), comprehensive requirement coverage verification, baseline security preservation testing, documentation review confirming RDPS-2 includes all RDPS-1 protections, gap analysis showing complete RDPS-1 implementation

**References**:

- Defense in Depth: https://csrc.nist.gov/glossary/term/defense_in_depth
- Layered Security: https://www.nist.gov/cybersecurity
- Security Capability Levels: https://www.iso.org/standard/56328.html

### Assessment: RDPS-REQ-60 (All RDPS-2 requirements implemented for RDPS-3)

**Reference**: RDPS-REQ-60 - All RDPS-2 requirements shall be implemented for RDPS-3 capability (RDPS-3-REQ-1 requirement)

**Given**: A conformant browser claiming RDPS-3 capability (full remote processing with critical data requiring maximum security) that must also meet all RDPS-2 requirements

**Task**: This assessment verifies that browsers claiming RDPS-3 capability (full remote processing with critical data) fully implement all RDPS-2 requirements as a comprehensive security foundation before adding RDPS-3-specific maximum security enhancements. RDPS-3 capability represents the highest security level, building upon both RDPS-1 and RDPS-2 by adding enterprise-grade security controls (end-to-end encryption, hardware-backed keys, high availability, disaster recovery, real-time monitoring, SIEM integration, zero-trust, compliance logging, vulnerability scanning, incident response, access revocation, transparency reporting, forward secrecy, user notifications, service discontinuation procedures, and enterprise policy configuration), but must maintain all RDPS-2 protections including all RDPS-1 requirements (baseline security), data encryption at rest, mutual TLS authentication, redundant data copies, backup recovery with integrity, retention policies with secure deletion, per-user per-origin access controls, audit logging, data integrity verification (cryptographic hashes), endpoint substitution protection, replay attack defense, data minimization, user synchronization controls, secure data export, user-configurable endpoint security, service availability verification, connection pooling security, and authentication token protection. Compliance with this requirement ensures maximum security with no gaps, comprehensive defense-in-depth through three security layers (RDPS-1 baseline, RDPS-2 extended, RDPS-3 maximum), predictable security escalation across capability levels, and enterprise-grade protection for critical data. The assessment must verify that all 18 RDPS-2 requirements are implemented and functional (RDPS-2-REQ-1 through RDPS-2-REQ-18 which includes the 15 RDPS-1 requirements via RDPS-2-REQ-1), each requirement meets its specified criteria without degradation, RDPS-3 enhancements do not compromise RDPS-2 baseline security, and documentation clearly indicates RDPS-3 includes all RDPS-2 and RDPS-1 protections. The assessment should leverage assessments RDPS-REQ-16 through RDPS-REQ-32 results (covering all RDPS-2 requirements beyond RDPS-1), verifying each passed before approving RDPS-3 claim.

**Verification**:

1. Verify all RDPS-1 requirements implemented via RDPS-REQ-59 assessment (15 requirements)
2. Test RDPS-2-REQ-2 implemented (encryption at rest) per RDPS-REQ-16 assessment
3. Verify RDPS-2-REQ-3 implemented (mutual TLS) per RDPS-REQ-17 assessment
4. Test RDPS-2-REQ-4 implemented (redundant copies) per RDPS-REQ-18 assessment
5. Verify RDPS-2-REQ-5 implemented (backup recovery) per RDPS-REQ-19 assessment
6. Test RDPS-2-REQ-6 implemented (retention policies) per RDPS-REQ-20 assessment
7. Verify RDPS-2-REQ-7 implemented (access controls) per RDPS-REQ-21 assessment
8. Test RDPS-2-REQ-8 implemented (audit logging) per RDPS-REQ-22 assessment
9. Verify RDPS-2-REQ-9 implemented (integrity verification) per RDPS-REQ-23 assessment
10. Test RDPS-2-REQ-10 implemented (endpoint protection) per RDPS-REQ-24 assessment
11. RDPS-2-REQ-11 (replay defense) per RDPS-REQ-25
12. RDPS-2-REQ-12 (data minimization) per RDPS-REQ-26
13. RDPS-2-REQ-13 (sync controls) per RDPS-REQ-27
14. RDPS-2-REQ-14 (data export) per RDPS-REQ-28
15. RDPS-2-REQ-15 (endpoint config) per RDPS-REQ-29
16. RDPS-2-REQ-16 (availability) per RDPS-REQ-30
17. RDPS-2-REQ-17 (pooling) per RDPS-REQ-31
18. RDPS-2-REQ-18 (token protection) per RDPS-REQ-32
19. All 18 RDPS-2 requirements fully implemented (includes RDPS-1 via RDPS-2-REQ-1)
20. RDPS-3 enhancements do not compromise RDPS-1/RDPS-2 baseline

**Pass Criteria**: All 18 RDPS-2 requirements fully implemented (including 15 RDPS-1 via RDPS-2-REQ-1) AND each meets specified criteria AND no degradation from RDPS-3 enhancements AND documentation confirms inclusion AND no gaps or exceptions

**Fail Criteria**: Any RDPS-2 requirement not implemented OR any requirement fails criteria OR RDPS-3 compromises RDPS-2/RDPS-1 baseline OR documentation does not confirm inclusion OR gaps or exceptions present

**Evidence**: RDPS-REQ-1 through RDPS-REQ-32 assessment results (all pass), comprehensive requirement coverage verification across all three capability levels, baseline security preservation testing, documentation review confirming RDPS-3 includes all RDPS-2 and RDPS-1 protections, gap analysis showing complete RDPS-2 implementation

**References**:

- Defense in Depth: https://csrc.nist.gov/glossary/term/defense_in_depth
- Layered Security Architecture: https://www.nist.gov/cybersecurity
- Enterprise Security Capability Maturity: https://www.iso.org/standard/56328.html

# Annex A (informative): Mapping between the present document and CRA requirements

_Table mapping technical security requirements from Section 5 of the present document to essential cybersecurity requirements in Annex I of the CRA. The purpose of this is to help identify missing technical security requirements._

| CRA requirement                                 | Technical security requirements(s) |
|-------------------------------------------------|------------------------------------|
| No known exploitable vulnerabilities            | UPD-0-REQ-1 through UPD-0-REQ-24 (Forced automatic updates), UPD-1-REQ-1 through UPD-1-REQ-25 (Automatic updates with postponement), LOG-REQ-14 (Incident detection), LOG-REQ-15 (Audit trail completeness), EMB-REQ-9 (JavaScript bridge security review), EXT-REQ-4 (Manifest validation), EXT-REQ-17 (Extension signature validation) |
| Secure design, development, production          | EMB-REQ-9 (JavaScript bridge security review), EXT-REQ-4 (Manifest validation), EXT-REQ-17 (Extension signature validation), UPD-REQ-2 (Update signature verification), UPD-REQ-23 (Binary reproducibility), ENC-REQ-12 (Secure random number generation), SYS-REQ-26 (Sandbox escape prevention), SYS-REQ-27 (Spectre/Meltdown mitigations), SYS-REQ-28 (Side-channel mitigations) |
| Secure by default configuration                 | DOM-0-REQ-1 through DOM-0-REQ-6 (Full isolation by default), ENC-0-REQ-1 through ENC-0-REQ-23 (Full encryption by default), DOM-REQ-5 (SameSite=Lax default), DOM-REQ-12 (document.domain restricted by default), ENC-REQ-16 (HTTPS-first mode), UPD-0-REQ-1 (Automatic updates enabled by default), LOG-REQ-9 (User consent for telemetry), SYS-0-REQ-1 through SYS-0-REQ-13 (Sandboxed by default), EMB-0-REQ-1 through EMB-0-REQ-7 (Isolated by default) |
| Secure updates                                  | UPD-REQ-1 (Automatic update mechanism), UPD-REQ-2 (Update signature verification), UPD-REQ-3 (HTTPS-only delivery), UPD-REQ-4 (Manifest integrity), UPD-REQ-5 (Rollback protection), UPD-REQ-6 (Channel isolation), UPD-REQ-7 (Component updates), UPD-REQ-8 (Emergency updates), UPD-REQ-9 (Verification before installation), UPD-REQ-10 (Failure recovery), UPD-REQ-11 (Transparency logging), UPD-REQ-12 (Delta update security), UPD-REQ-13 (Server authentication), UPD-REQ-14 (Timing jitter), UPD-REQ-15 (Background enforcement), UPD-REQ-16 (Notification UI), UPD-REQ-17 (Forced critical updates), UPD-REQ-18 (Verification chain), UPD-REQ-19 (Source pinning), UPD-REQ-20 (Integrity verification), UPD-REQ-21 (Staged rollout), UPD-REQ-22 (Domain validation), UPD-REQ-23 (Binary reproducibility), EXT-REQ-10 (Extension update verification) |
| Authentication and access control mechanisms    | DOM-REQ-1 (Process-per-site isolation), DOM-REQ-3 (Cross-origin DOM access prevention), DOM-REQ-4 (CORS preflight), DOM-REQ-5 (SameSite cookies), DOM-REQ-6 (Storage isolation), EXT-REQ-1 (Extension permission model), EXT-REQ-3 (Extension API access control), EXT-REQ-7 (Host permissions validation), SYS-REQ-6 (Device API permissions), SYS-REQ-7 (PWA permission management), SYS-REQ-8 through SYS-REQ-19 (Device-specific permissions), EMB-REQ-1 (JavaScript bridge API allowlists), EMB-REQ-5 (User consent for sensitive operations), EMB-REQ-11 (Granular capability-based permissions), PRO-REQ-2 (User consent for custom protocols), PRO-REQ-3 (Protocol allowlist enforcement) |
| Confidentiality protection                      | ENC-REQ-1 (TLS 1.3+ support), ENC-REQ-2 (Certificate validation), ENC-REQ-3 (Certificate pinning), ENC-REQ-4 (HSTS enforcement), ENC-REQ-5 (Mixed content blocking), ENC-REQ-6 (Certificate Transparency), ENC-REQ-11 (Web Crypto API), ENC-REQ-13 (Subresource Integrity), ENC-REQ-14 (Encrypted SNI/ECH), ENC-REQ-16 (HTTPS-first mode), ENC-REQ-20 (Cryptographic key isolation), ENC-REQ-21 (Certificate store security), DOM-REQ-2 (CORB), DOM-REQ-6 (Storage isolation), EMB-REQ-4 (Context isolation), EMB-REQ-8 (Host credential protection), EMB-REQ-12 (Storage isolation from host), EMB-REQ-14 (Encrypted cross-process bridge), EMB-REQ-17 (Certificate validation for embedded content), EMB-REQ-21 (Mixed content prevention), EMB-REQ-27 (Network security configuration) |
| Integrity protection for data and configuration | ENC-REQ-2 (Certificate validation), ENC-REQ-13 (Subresource Integrity), UPD-REQ-2 (Update signature verification), UPD-REQ-4 (Update manifest integrity), UPD-REQ-5 (Rollback protection), UPD-REQ-20 (Update integrity verification), LOG-REQ-11 (Log integrity protection), EMB-REQ-2 (JavaScript bridge input validation), EMB-REQ-7 (Immutable bridge configuration), EMB-REQ-19 (SRI for embedded content), EMB-REQ-23 (Cryptographic signature verification for local content), EXT-REQ-4 (Manifest validation), EXT-REQ-17 (Extension signature validation), DOM-REQ-9 (CORP), DOM-REQ-11 (COEP) |
| Data minimization                               | LOG-REQ-7 (Log data minimization), LOG-REQ-8 (Log anonymization), LOG-REQ-12 (Log retention policies), LOG-REQ-18 (Privacy-preserving analytics), EXT-REQ-16 (Extension telemetry privacy), DOM-REQ-6 (Storage isolation limits data sharing), EMB-REQ-12 (Storage isolation from host), PRO-REQ-5 (Protocol parameter sanitization to prevent data leakage) |
| Availability protection                         | SYS-REQ-20 (Hardware resource limits), SYS-REQ-21 (Memory isolation), SYS-REQ-22 (CPU quotas), SYS-REQ-23 (Network bandwidth limits), SYS-REQ-24 (Storage quotas), SYS-REQ-25 (Process priority management), UPD-REQ-10 (Update failure recovery), UPD-REQ-21 (Staged rollout), EMB-REQ-10 (Bridge API rate limiting), EXT-REQ-5 (Extension sandboxing to prevent interference) |
| Minimize impact on other devices or services    | DOM-REQ-1 (Process-per-site isolation), SYS-REQ-1 (Process sandbox enforcement), SYS-REQ-2 (Renderer process isolation), SYS-REQ-3 (GPU process isolation), SYS-REQ-4 (Network service isolation), SYS-REQ-20 (Resource limits), SYS-REQ-26 (Sandbox escape prevention), EXT-REQ-5 (Extension sandboxing), EXT-REQ-6 (Cross-extension isolation), EMB-REQ-4 (Context isolation), PRO-REQ-13 (Handler capability restrictions) |
| Limit attack surface                            | EXT-0-REQ-1 through EXT-0-REQ-3 (No extension support), SYS-0-REQ-1 through SYS-0-REQ-13 (Fully sandboxed), EMB-0-REQ-1 through EMB-0-REQ-7 (No JavaScript bridge), PRO-0-REQ-1 through PRO-0-REQ-5 (HTTP/HTTPS only), DOM-REQ-7 (iframe sandboxing), DOM-REQ-8 (Opaque origin handling), EMB-REQ-6 (No system-level API exposure), EMB-REQ-16 (Allowlists over denylists), EXT-REQ-12 (Background script restrictions), ENC-REQ-19 (Legacy crypto deprecation) |
| Exploit mitigation by limiting incident impact  | DOM-REQ-1 (Process-per-site isolation limits cross-site impact), SYS-REQ-1 (Sandbox enforcement), SYS-REQ-2 (Process isolation), SYS-REQ-21 (Memory isolation), SYS-REQ-26 (Sandbox escape prevention), SYS-REQ-27 (Spectre/Meltdown mitigations), SYS-REQ-28 (Side-channel mitigations), DOM-REQ-2 (CORB), DOM-REQ-9 (CORP), DOM-REQ-10 (COOP), DOM-REQ-11 (COEP), EXT-REQ-2 (Content script isolation), EXT-REQ-5 (Extension sandboxing), EXT-REQ-6 (Cross-extension isolation), EMB-REQ-4 (Context isolation), UPD-REQ-5 (Rollback protection), UPD-REQ-21 (Staged rollout limits blast radius) |
| Logging and monitoring mechanisms               | LOG-REQ-1 (Security event logging), LOG-REQ-2 (Certificate error logging), LOG-REQ-3 (Extension security events), LOG-REQ-4 (CSP violation reporting), LOG-REQ-5 (Network Error Logging), LOG-REQ-6 (Crash reporting), LOG-REQ-10 (Secure log transmission), LOG-REQ-11 (Log integrity protection), LOG-REQ-13 (Security dashboard), LOG-REQ-14 (Incident detection), LOG-REQ-15 (Audit trail completeness), LOG-REQ-16 (Real-time security alerts), LOG-REQ-17 (Forensic log export), LOG-REQ-19 (Compliance logging), LOG-REQ-20 (Log access controls), EMB-REQ-3 (JavaScript bridge logging), EMB-REQ-22 (Trust decision logging), EMB-REQ-32 (Trust boundary violation events), UPD-REQ-11 (Update transparency logging), PRO-REQ-9 (Protocol handler logging) |
| Secure deletion and data transfer               | DOM-REQ-6 (Storage isolation enables secure per-origin deletion), ENC-REQ-1 (TLS 1.3+ for secure transfer), ENC-REQ-3 (Certificate pinning for critical transfers), ENC-REQ-5 (Mixed content blocking), EMB-REQ-17 (Certificate validation for embedded content transfers), EMB-REQ-21 (Mixed content prevention), EMB-REQ-27 (Network security configuration), SYS-REQ-24 (Storage quotas with cleanup mechanisms), EXT-REQ-11 (Extension storage isolation enables clean uninstall) |

# Annex B (informative): Mapping of Use Cases to Capabilities and Requirements

This annex provides a comprehensive mapping of each use case defined in Section 4.4 to the relevant browser capabilities and their associated requirement sets. This mapping helps manufacturers and assessors identify which requirements apply to specific deployment contexts.

## B.1 Use Case Mapping Methodology

For each use case, the mapping identifies:

1. **Primary Capabilities**: Core security capabilities that are essential for the use case
2. **Recommended Condition Levels**: Specific condition levels (e.g., DOM-1, EXT-2) appropriate for the use case's risk profile
3. **Critical Requirements**: Specific requirement sets that are satisfied for the use case
4. **Optional Enhancements**: Additional requirements that may be appropriate based on deployment specifics

## B.2 Use Case to Capability Mappings

### UC-B1: General Purpose Web Browsing (Risk Level: Standard)

**Primary Capabilities and Recommended Conditions**:

- **DOM (Domain/Origin Isolation)**: DOM-1 (Controlled isolation)
- **EXT (Extension System)**: EXT-1 or EXT-2
- **ENC (Encryption)**: ENC-1
- **LOG (Logging/Monitoring)**: LOG-1
- **UPD (Updates)**: UPD-1
- **PRO (Protocol Handlers)**: PRO-1
- **SYS (System Resources)**: SYS-1

**Critical Requirements**: DOM-1-REQ-1 through DOM-1-REQ-9, ENC-1-REQ-1 through ENC-1-REQ-19, UPD-1-REQ-1 through UPD-1-REQ-25, EXT-1-REQ-1 through EXT-1-REQ-14, LOG-1-REQ-1 through LOG-1-REQ-18, SYS-1-REQ-1 through SYS-1-REQ-22

**Assessment References**: All DOM, ENC, UPD, EXT, LOG, PRO, SYS assessments apply

---

### UC-B2: Development and Testing Environments (Risk Level: High)

**Primary Capabilities and Recommended Conditions**:

- **DOM**: DOM-2
- **EXT**: EXT-2
- **ENC**: ENC-1
- **LOG**: LOG-2
- **UPD**: UPD-1 or UPD-2
- **PRO**: PRO-2
- **SYS**: SYS-2

**Critical Requirements**: DOM-2-REQ-1 through DOM-2-REQ-12, EXT-2-REQ-1 through EXT-2-REQ-10, LOG-2-REQ-1 through LOG-2-REQ-20, PRO-2-REQ-1 through PRO-2-REQ-12, SYS-2-REQ-1 through SYS-2-REQ-15

**Assessment References**: All capability assessments, emphasis on EXT-REQ-9, DOM-REQ-9-11, SYS-REQ-14-17

---

### UC-B3: Kiosks and Shared Terminals (Risk Level: High)

**Primary Capabilities and Recommended Conditions**:

- **DOM**: DOM-0 or DOM-1
- **EXT**: EXT-0
- **ENC**: ENC-0 or ENC-1
- **LOG**: LOG-3
- **UPD**: UPD-0
- **PRO**: PRO-0
- **SYS**: SYS-0
- **EMB** (if embedded): EMB-1 or EMB-2

**Critical Requirements**: DOM-0-REQ-1 through DOM-0-REQ-6, EXT-0-REQ-1 through EXT-0-REQ-3, ENC-0-REQ-1 through ENC-0-REQ-23, LOG-3-REQ-1 through LOG-3-REQ-20, UPD-0-REQ-1 through UPD-0-REQ-24, PRO-0-REQ-1 through PRO-0-REQ-5, SYS-0-REQ-1 through SYS-0-REQ-13

**If Embedded**: EMB-1-REQ-1 through EMB-1-REQ-17, EMB-REQ-8, EMB-REQ-3, EMB-REQ-22

**Additional**: Domain allowlisting, session auto-termination, no credential storage, remote monitoring

**Assessment References**: Strictest criteria; DOM-REQ-1-8, ENC-REQ-1-6, UPD-REQ-1-11, SYS-REQ-1-4, LOG-REQ-10-11

---

### UC-B4: Financial Services Access (Risk Level: High)

**Primary Capabilities and Recommended Conditions**:

- **DOM**: DOM-1
- **EXT**: EXT-1
- **ENC**: ENC-0 or ENC-1
- **LOG**: LOG-1
- **UPD**: UPD-0 or UPD-1
- **PRO**: PRO-1
- **SYS**: SYS-1
- **EMB** (if embedded): EMB-1 or EMB-2

**Critical Requirements**: ENC-0-REQ-1 through ENC-0-REQ-23 OR ENC-1-REQ-1 through ENC-1-REQ-19, DOM-1-REQ-1 through DOM-1-REQ-9, EXT-1-REQ-1 through EXT-1-REQ-14, LOG-REQ-2, LOG-REQ-14

**If Embedded**: EMB-1-REQ-1 through EMB-1-REQ-17, EMB-REQ-17, EMB-REQ-20, EMB-REQ-2, EMB-REQ-8

**Assessment References**: ENC-REQ-1-7, ENC-REQ-17, DOM-REQ-5, LOG-REQ-2, EMB-REQ-1-10 (if embedded)

---

### UC-B5: Healthcare and Medical Systems (Risk Level: High)

**Primary Capabilities and Recommended Conditions**:

- **DOM**: DOM-1 or DOM-2
- **EXT**: EXT-1
- **ENC**: ENC-0
- **LOG**: LOG-3
- **UPD**: UPD-0 or UPD-1
- **PRO**: PRO-1
- **SYS**: SYS-1
- **EMB** (if embedded): EMB-1 or EMB-2

**Critical Requirements**: ENC-0-REQ-1 through ENC-0-REQ-23, LOG-3-REQ-1 through LOG-3-REQ-20, LOG-REQ-7, LOG-REQ-8, LOG-REQ-19, DOM-1-REQ-1 through DOM-1-REQ-9, UPD-0-REQ-17, EXT-1-REQ-1 through EXT-1-REQ-14

**If Embedded**: EMB-1-REQ-1 through EMB-1-REQ-17, EMB-REQ-8, EMB-REQ-3, EMB-REQ-22

**Compliance**: GDPR data protection, session re-auth, auto-timeout, audit trails

**Assessment References**: ENC-REQ-1-7, LOG-REQ-7-9, LOG-REQ-19, LOG-REQ-11, EMB-REQ-3, EMB-REQ-22 (if embedded)

---

### UC-B6: E-Government Services Access (Risk Level: High)

**Primary Capabilities and Recommended Conditions**:

- **DOM**: DOM-1
- **EXT**: EXT-1
- **ENC**: ENC-0
- **LOG**: LOG-2 or LOG-3
- **UPD**: UPD-0 or UPD-1
- **PRO**: PRO-1
- **SYS**: SYS-1 or SYS-2

**Critical Requirements**: ENC-0-REQ-1 through ENC-0-REQ-23, ENC-REQ-2, ENC-REQ-3, SYS-REQ-29, DOM-1-REQ-1 through DOM-1-REQ-9, LOG-REQ-15, UPD-0-REQ-1 through UPD-0-REQ-24

**Special**: Digital signatures, smart card integration, eIDAS compliance, legal non-repudiation

**Assessment References**: ENC-REQ-2-3, ENC-REQ-6, SYS-REQ-29, LOG-REQ-15

---

### UC-B7: Enterprise Applications (Risk Level: High)

**Primary Capabilities and Recommended Conditions**:

- **DOM**: DOM-2
- **EXT**: EXT-1 or EXT-2
- **ENC**: ENC-1
- **LOG**: LOG-3
- **UPD**: UPD-0 or UPD-1
- **PRO**: PRO-2
- **SYS**: SYS-2
- **EMB** (if Electron/CEF/Tauri): EMB-2 or EMB-3

**Critical Requirements**: DOM-2-REQ-1 through DOM-2-REQ-12, LOG-3-REQ-1 through LOG-3-REQ-20, LOG-REQ-13, LOG-REQ-14, LOG-REQ-16, EXT-2-REQ-10, UPD-0-REQ-1 through UPD-0-REQ-24, PRO-2-REQ-11, SYS-2-REQ-11 through SYS-2-REQ-15

**Enterprise Features**: SSO, DLP, extension allowlisting, profile separation, BYOD containerization

**Assessment References**: DOM-REQ-9-11, LOG-REQ-13-16, LOG-REQ-19, EXT-REQ-3, PRO-REQ-3, SYS-REQ-7

---

### UC-B8: Critical Infrastructure (Risk Level: CRITICAL)

**Primary Capabilities and Recommended Conditions**:

- **DOM**: DOM-0 or DOM-1
- **EXT**: EXT-0
- **ENC**: ENC-0
- **LOG**: LOG-3
- **UPD**: UPD-0
- **PRO**: PRO-0 or PRO-1
- **SYS**: SYS-0 or SYS-1
- **EMB** (if SCADA/ICS): EMB-0 or EMB-1

**Critical Requirements**: DOM-0-REQ-1 through DOM-0-REQ-6, EXT-0-REQ-1 through EXT-0-REQ-3, ENC-0-REQ-1 through ENC-0-REQ-23, LOG-3-REQ-1 through LOG-3-REQ-20, LOG-REQ-11, UPD-0-REQ-1 through UPD-0-REQ-24, UPD-REQ-5, UPD-REQ-11, PRO-0-REQ-1 through PRO-0-REQ-5, SYS-0-REQ-1 through SYS-0-REQ-13

**If Embedded**: EMB-0-REQ-1 through EMB-0-REQ-7, EMB-REQ-17, EMB-REQ-20, EMB-REQ-27, EMB-REQ-31

**Additional**: Zero trust, mTLS, RBAC, air-gapped deployment, supply chain controls, physical security

**Assessment References**: ALL assessments at strictest criteria; ENC-REQ-1-11, UPD-REQ-1-11, LOG-REQ-10-11, SYS-REQ-26-28, EMB-REQ-17-31 (if embedded)

---

### UC-B9: Security Research (Risk Level: CRITICAL)

**Primary Capabilities and Recommended Conditions**:

- **DOM**: DOM-2 or DOM-3
- **EXT**: EXT-3
- **ENC**: ENC-1
- **LOG**: LOG-3
- **UPD**: UPD-2 or UPD-3
- **PRO**: PRO-3
- **SYS**: SYS-3

**Critical Requirements**: LOG-3-REQ-1 through LOG-3-REQ-20, LOG-REQ-6, LOG-REQ-17, DOM-3-REQ-9, EXT-3-REQ-9 through EXT-3-REQ-12, SYS-3-REQ-15

**Environment Isolation**: Disposable VMs, network capture, air-gapped zones, snapshot/rollback, behavioral logging

**Important**: Deploy ONLY in isolated research environments; NOT for production

**Assessment References**: LOG-REQ-1-20, LOG-REQ-17, EXT-REQ-4, all assessments in adversarial conditions

---

### UC-B10: Adapted Browser with Modified Features (Risk Level: Standard to High)

**Primary Capabilities and Recommended Conditions**:

- **All capabilities**: Inherit from upstream browser
- **LOG**: May vary (LOG-1, LOG-2, or LOG-3)
- **UPD**: UPD-0 or UPD-1 (manufacturer-controlled)
- **EMB** (if native integration added): EMB-2 or EMB-3

**Critical Requirements**: All upstream requirements PLUS UPD-REQ-2, UPD-REQ-11, EMB-REQ-9, LOG-REQ-9, LOG-REQ-7, LOG-REQ-8

**If Native Integration Added**: EMB-2-REQ-1 through EMB-2-REQ-10 OR EMB-3-REQ-1 through EMB-3-REQ-12, EMB-REQ-1, EMB-REQ-2, EMB-REQ-3, EMB-REQ-9

**For Bundled Extensions**: EXT-REQ-4, EXT-REQ-17, supply chain security

**Manufacturer Obligations**: Timely upstream patches, security review, transparency, maintaining security controls, supply chain security

**Risk Level**: Standard (minimal modifications) to High (extensive modifications, sensitive data, high-risk deployment)

**Assessment References**: All upstream assessments PLUS EMB-REQ-9, UPD-REQ-2, LOG-REQ-9, EMB assessments if native integration

---

## B.3 Capability Condition Level Selection Guide

| Use Case Risk | DOM | EXT | ENC | LOG | UPD | PRO | SYS | EMB |
|---------------|-----|-----|-----|-----|-----|-----|-----|-----|
| Standard | DOM-1 | EXT-1/2 | ENC-1 | LOG-1 | UPD-1 | PRO-1 | SYS-1 | EMB-1 |
| High | DOM-1/2 | EXT-0/1 | ENC-0/1 | LOG-2/3 | UPD-0/1 | PRO-0/1 | SYS-0/1/2 | EMB-0/1/2 |
| Critical | DOM-0/1 | EXT-0 | ENC-0 | LOG-3 | UPD-0 | PRO-0 | SYS-0/1 | EMB-0/1 |

**Note**: Specific deployments shall conduct detailed risk assessments per Annex D to determine appropriate condition levels.

## B.4 Cross-Reference to Assessments

All assessments in Chapter 6 map to requirements referenced in this annex:

- **Section 6.1**: DOM-REQ-1 through DOM-REQ-12
- **Section 6.2**: EXT-REQ-1 through EXT-REQ-18
- **Section 6.3**: ENC-REQ-1 through ENC-REQ-21
- **Section 6.4**: LOG-REQ-1 through LOG-REQ-20
- **Section 6.5**: UPD-REQ-1 through UPD-REQ-23
- **Section 6.6**: PRO-REQ-1 through PRO-REQ-23
- **Section 6.7**: SYS-REQ-1 through SYS-REQ-32
- **Section 6.8**: EMB-REQ-1 through EMB-REQ-32

# Annex C (informative): Relationship between the present document and any related ETSI standards (if any)

_List any related ETSI standards and how they interact with the present document._

# Annex D (informative): Risk identification and assessment methodology

## D.1 Assets

### D.1.1 Data

_What data is stored on the product?_

### D.1.2 Product functions