What is a 'Trojan' in the context of network security?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. Malicious software disguised as legitimate software to gain unauthorised access.
In network security, a Trojan (or Trojan horse) is malicious software that pretends to be a legitimate or harmless program to deceive users into installing it. Once installed, it can give hackers unauthorized access to the system, allowing them to steal information, damage files, or perform other harmful activities. Unlike viruses or worms, Trojans do not spread by themselves but depend on users being tricked into running them.