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What is a Trojan horse in computer security?

1. Software used for data recovery
2. A type of malware that replicates itself
3. A program that seems legitimate but damages the system
4. Antivirus software

Correct answer: A program that seems legitimate but damages the system

Solution

A Trojan horse is malware that appears to be legitimate or useful but performs harmful actions once executed. Unlike a worm or virus, it typically does not self-replicate; it tricks the user into installing it.

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