6.1.6.2.3. Network connections between the host and unknown remote systems

6.1.6.2.3.8. E-mail Generators

6.1.6.2.3.1. Network Service Worm

6.1.6.2.3.2. Trojan Horse

6.1.6.2.3.3. Malicious Mobile Code

6.1.6.2.3.4. Backdoor

6.1.6.2.3.5. Keystroke Logger

6.1.6.2.3.6. Rootkit

6.1.6.2.3.7. Malicious Browser Plug-Ins