What is the primary function of a Trojan program?

• A. To collect personal information without consent
• B. To allow a hacker remote access to a target computer
• C. To automatically display advertisements
• D. To replicate and spread without user interaction

Answer: (B)

The primary function of a Trojan program is to allow a hacker remote access to a target computer. Trojans are a type of malware that disguise themselves as legitimate software to trick users into installing them. Once executed, they can create a backdoor for attackers to gain unauthorized access to the affected system.

This backdoor can facilitate various malicious activities, including data theft, system disruption, or further exploitation of the compromised system. Unlike viruses or worms, Trojans do not self-replicate or spread independently; they rely on users to download and install them, often under false pretenses. This characteristic underscores their primary function of providing remote access rather than actively spreading like other malware types.