Which term refers to malicious software designed to cause harm and operate covertly?

• A. Adware
• B. Spyware
• C. Ransomware
• D. Malware

Answer: (D)

Malware is the broad category for software created to harm, steal, or disrupt a computer, often running secretly in the background to avoid detection. This makes it the best fit for a description of malicious software designed to cause harm and operate covertly. Adware mainly displays advertisements and isn’t inherently about covert harm. Spyware is a type of malware focused on secretly collecting information. Ransomware is a specific harmful type that encrypts data and demands payment. While those threats exist, the general term that covers all of them is malware.