What is the purpose of the EICAR test file in endpoint security testing?

• A. To verify antivirus functionality by triggering a safe, dummy threat.
• B. To encrypt files for ransomware simulation.
• C. To test firewall NAT traversal.
• D. To test network throughput.

Answer: (A)

The test focuses on validating that antivirus protection is active and responsive. The EICAR test file is a safe, non-malicious data string that antivirus engines recognize. By placing this file on an endpoint and running a scan or letting real-time protection catch it, you can verify that the protection system is actually monitoring, that updates and policies are in place, and that alerts or quarantine actions are functioning as intended. It’s designed to be harmless while still triggering the defense, so you can test detection without risking damage from real malware.

The other options don’t fit this purpose: encryption for ransomware simulation would actually modify files and simulate a threat, which EICAR is not; testing firewall NAT traversal and testing network throughput are network-layer checks, not about endpoint antivirus protection.