Which term describes a category of malware intended to perform harmful actions on a target system?

• A. APTs
• B. Crypter
• C. Injector
• D. Malicious Code

Answer: (D)

Malicious code is the broad term for software designed to cause harm, disruption, or unauthorized access to a target system. It encompasses all forms of malware intended to damage, steal data, or take control of a device, such as viruses, worms, Trojans, and ransomware. The other terms describe different concepts: an APT is an attacker group or campaign, a crypter is a tool used to obfuscate malware to evade detection, and an injector refers to a technique for running code inside another process. Because it specifically denotes the harmful software category, Malicious Code is the best fit.