Which malware family is described as a backdoor that can bypass standard authentication or security measures?

• A. RATs
• B. PoisonIvy
• C. Backdoor Trojans
• D. njRAT

Answer: (C)

A backdoor is a hidden entry point into a system that lets an attacker bypass normal authentication and security checks. A backdoor Trojan is malware whose primary purpose is to install and maintain that secret access, often by defeating or avoiding standard login controls, weakening protections, or creating covert paths that the attacker can exploit later. Because the scenario describes a backdoor that can bypass standard authentication or security measures, this general category fits best—the malware is intentionally designed to bypass the usual defenses to maintain access.

RATs are about remote control after access, which is a broader capability than just establishing a covert entry point. PoisonIvy and njRAT are specific families within the broader realm of backdoors and remote access tools, but the wording points to the general backdoor Trojan type as the best fit.