Which term denotes malicious software that damages or disables computer systems and gives control to the attacker?

• A. Spyware
• B. Trojan Horse
• C. Malware
• D. Virus

Answer: (C)

Malware is the broad term for software designed to cause harm to a computer and give an attacker control over it. The description here fits because it highlights not just damage or disruption, but also the creation of a way for an attacker to take control of the system. Spyware focuses on stealthy data collection rather than damage or remote control. A Trojan Horse is a disguise for malicious activity and is a specific type of malware, not the general category. A virus is also a specific type of malware that replicates and can cause damage, but again it represents one family, not the overall label. So, the best single term for this scenario is malware.