ITPEC FE Subject A April 2026 Question 30

A malicious computer program that presents itself as legitimate.

The name comes from the wooden horse: the user installs and runs it willingly because it looks like a useful tool, and the hidden payload acts once inside. Unlike a virus or worm, a Trojan does not self-replicate — it relies on the user to let it in.

Answer (b)

Why not others:
- (a) — a brute force tool systematically tries candidate passwords; it does not disguise itself as anything
- (c) — describes a malicious person, whereas a Trojan horse is software
- (d) — describes a password cracking tool, again with no element of disguise

Key rule: The defining trait of a Trojan is disguise, not what the payload does. Options describing an attacker or a cracking tool are naming something else.

AI-generated — may contain errors