Certified Ethical Hacker (CEH v12) — Question 299

Which type of malware spreads from one system to another or from one network to another and causes similar types of damage as viruses do to the infected system?

Answer options

• A. Worm
• B. Rootkit
• C. Adware
• D. Trojan

Correct answer: A

Explanation

A worm is designed to replicate itself and spread across networks, causing damage in a manner similar to viruses. In contrast, a rootkit is primarily used for stealthy control, adware generates unsolicited advertisements, and a Trojan disguises itself as legitimate software but does not self-replicate like a worm.