Add description sentences to each threat

* High to Low: AUTH-3, AUTH-4, AUTH-5, NPII-1, NPII-2, NPII-4

### C.4.x TH-RDOS: Attacker launches denial of service attack on remote data processing solution

### C.4.x TH-RDOS: Denial of service on remote data processing

Attacker launches denial of service attack on remote data processing solution.

| Risk factors                  | Likelihood | Security profiles |

|-------------------------------|------------|-------------------|

* High to Low: LOGG-\*, NPII-2

### C.4.x TH-LEAK: Attacker reads sensitive data sent outside the VPN connection by the product.

### C.4.x TH-LEAK: Sensitive data leaks

Attacker reads sensitive data sent outside the VPN connection by the product.

| Risk factors | Likelihood | Security profiles |

|--------------|------------|-------------------|

* High to Low: NPII-\*, LOGG-\*

### C.4.x TH-PLAN: Transmitting data in the clear

### C.4.x TH-PLAN: Transmitting sensitive data in the clear

Attacker may read sensitive data transmitted without encryption.

| Risk factors       | Likelihood | Security profiles |

|--------------------|------------|-------------------|