Which among the following is a malicious software?

  1. A. Hacking
  2. B. Password Cracking
  3. C. Trojan Horse
  4. D. Firewall

Correct Answer: C. Trojan Horse

Explanation

A Trojan Horse is a type of malware that is often disguised as legitimate software, while hacking and password cracking are activities/methods, and a firewall is a security tool.

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