Certified Information Security Manager (CISM) — Question 115

Signature based anti-malware controls are MOST effective against:

Answer options

• A. poorly configured firewall rules.
• B. reused virus code.
• C. known threats.
• D. zero-day exploits.

Correct answer: C

Explanation

Signature-based anti-malware controls are most effective against known threats because they rely on a database of signatures to identify malware. Options A, B, and D represent scenarios where signatures may not be available or effective, such as improperly configured firewalls, reused code that may not match existing signatures, and new threats that have not yet been cataloged.