Uses signature files to identify known malware.

• A. Anti-Malware Software
• B. Personal Firewalls
• C. Traditional Endpoint Security
• D. Signature Files

Answer: (D)

Signature files are the database of known malware patterns that a security solution uses to identify threats. Each signature represents a unique pattern, hash, or byte sequence found in malicious software. When scanning, the engine compares files, memory, and processes against this database; a match flags the item as malware and triggers containment or removal. This approach is highly effective for known threats because the signatures are updated as new malware is discovered. However, it may miss new or sophisticated threats that don’t yet have a signature, which is why many systems combine signature-based detection with heuristic or behavior-based methods for broader protection.