Network Vulnerabilities and Threats

Write at least 4 sentences about each of the concepts below

1. Malware
2. Virus
3. Trojan horse
4. Spyware
5. Denial of Service (define DoS Attacks)
6. Distributed Denial of Service (define DDoS Attacks)
7. Define Session Attacks and explain differences between Man-in-the-middle and TCP/IP session hijacking.
8. Spoofing (define and describe)
9. Define Intrusion Detection Systems and explain passive vs active.
10. Vulnerability assessment (define)
11. Network Optimization