The correct answer is: A. are legitimate programs that allow unauthorized access.
A Trojan horse is a type of malware that disguises itself as a legitimate program in order to trick users into installing it on their computers. Once installed, a Trojan horse can give the attacker access to the user’s computer, steal their data, or even take control of their computer.
Option B is incorrect because Trojan horses are designed to work. They are often used to steal data, install other malware, or take control of a computer.
Option C is incorrect because Trojan horses are not always hidden. Some Trojan horses are designed to be hidden from the user, but others are not.
Option
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