Malware categories – non-replicating program that compromises security Identify the malware type that does not replicate itself but can perform malicious actions or create a backdoor to compromise a computer system.

Introduction / Context:
Malware is commonly classified by behavior. Self-replication differentiates worms and traditional viruses from Trojans. Recognizing this helps choose appropriate defenses and incident responses.

Given Data / Assumptions:

• The program in question neither replicates nor copies itself.
• It can perform damaging actions or undermine security.
• We are to select the category that matches this behavior.

Concept / Approach:
A Trojan (from “Trojan horse”) masquerades as legitimate software to trick users into running it. Once executed, it may install backdoors, steal data, or change settings, but it does not self-replicate automatically. In contrast, a worm spreads on its own across networks without user action. A “joke program” or “hoax” does not necessarily contain malicious code.

Step-by-Step Solution:
Match the non-replicating behavior to malware taxonomy.Eliminate worm because worms replicate and propagate autonomously.Select Trojan as the accurate category.

Verification / Alternative check:
Security references define Trojans by their lack of self-replication and reliance on social engineering or bundling for distribution.

Why Other Options Are Wrong:

• Joke Program: typically harmless pranks; not necessarily malicious.
• Worm: explicitly self-replicating and self-propagating.
• Hoax: a false warning or rumor, not executable malware.

Common Pitfalls:
Confusing Trojans bundled with droppers or downloaders. While a Trojan may fetch other malware, the Trojan itself still lacks autonomous replication.

Final Answer:
Trojan