4. Which form of malware is disguised as a useful program?

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Explanation:

Trojan horse

More information :

A Trojan horse, commonly known as a “Trojan,” is a type of malware that disguises itself as a normal file or program to trick users into downloading and installing malware. A Trojan can give a malicious party remote access to an infected computer.

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the main idea of monster inc is good and evil

if im wrong correct me but have a blessed day!