Which of the following is listed as a malware category?

• A. Virus, Worms, Trojan Horses, Malicious Mobile Code, Tracking cookies, etc
• B. Firewalls
• C. Email protocols
• D. Encryption standards

Answer: (A)

Malware categories refer to the different types of malicious software that can harm a computer or network. The best choice lists well-known examples: viruses attach to files and spread, worms replicate themselves over networks, Trojan horses disguise themselves as legitimate software but execute harmful actions, and malicious mobile code covers harmful scripts or code that can run on devices or in web contexts. The phrase “tracking cookies” appears here as part of the broader idea of threats, but in security practice, cookies are not malware in the same sense as the other items; they’re more about tracking data, while the rest are clearly malicious software.

The other options describe defensive tools or standards rather than malware. Firewalls are protective barriers, not malware. Email protocols govern how messages are transmitted. Encryption standards specify how data is encoded for secrecy. So the option that lists actual malware types is the correct one.