23 Sep Practice Test Question: Zero-Day Attacks
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Which one of the following security controls is most effective against zero-day attacks?
A. Application control
B. Signature-based antivirus
C. Vulnerability scans
D. Intrusion prevention systems
Correct Answer: A.
Zero-day attacks are attacks that are not previously known to the security community. Therefore, signature based controls, such as vulnerability scans, antivirus software, and intrusion prevention systems are not effective against these attacks. Application control software may use whitelisting to limit software running on a system to a list of known good applications. This technique may prevent zero-day malware from running on the protected system.