CompTIA CySA+ (CS0-001) — Question 212

An HR employee began having issues with a device becoming unresponsive after attempting to open an email attachment. When informed, the security analyst became suspicious of the situation, even though there was not any unusual behavior on the IDS or any alerts from the antivirus software. Which of the following
BEST describes the type of threat in this situation?

Answer options

• A. Packet of death
• B. Zero-day malware
• C. PII exfiltration
• D. Known virus

Correct answer: B

Explanation

The correct answer is B, Zero-day malware, as it refers to malware that exploits vulnerabilities not yet known or patched by security software. The other options, such as A, C, and D, represent known issues or scenarios that do not align with the suspicious nature of an unresponsive device after interacting with an email attachment.