| 1. | List and describe the most common threats against contemporary information systems (Answer: see lecture 21, section 21.1) |
| 2. | Identify malware and distinguish among a virus, a worm, and a Trojan horse (Answer: see lecture 21, section 21.2) |
| 3. | Define a hacker and explain how hackers create security problems and damage systems (Answer: see lecture 21, section 21.3) |
| 4. | Define and explain computer crime (Answer: see lecture 21, section 21.3) |
| 5. | Explain how software defects affect system reliability and security (Answer: see lecture 21, section 21.5) |
| 6. | Describe the security and system reliability problems created by employees (Answer: see lecture 21, section 21.4) |
| 7. | Define computer crime and differentiate between hacker and cracker (Answer: see section 21.3) |
| 8. | What is spoofing and sniffing (Answer: see section 21.3.1) |
| 9. | How Denial-of-service attack occurred (Answer: see section 21.3.2) |
| 10. | Define Identity theft and click fraud (Answer: see section 21.3.6, 21.3.5) |