Which type of security threat can be described as software that attaches itself to another program to execute a specific unwanted function?
- virus
- worm
- proxy Trojan horse
- denial of service Trojan horse
Answers Explanation & Hints: Viruses can be malicious and destructive or simply change something about the computer such as words or images, and that do not necessarily cause the computer to malfunction. Viruses can be spread through shared media such as CDs or memory sticks, but can also be delivered via the Internet and email.