Which of the following is NOT a responsibility under Requirement 5.2 for maintaining anti-virus mechanisms?

The responsibility outlined in Requirement 5.2 for maintaining anti-virus mechanisms emphasizes the importance of keeping protective systems functional and effective against threats. Disabling antivirus software during updates can create a significant security vulnerability, as it leaves the system unprotected against malware or other malicious software that might be introduced during that period.

On the other hand, keeping anti-virus software current ensures that the latest virus definitions and threat intelligence are in place to provide optimal protection. Performing periodic scans is crucial for identifying and mitigating any potential threats that may have evaded real-time protection. Additionally, generating audit logs that are retained in accordance with PCI DSS requirements is essential for maintaining compliance and facilitating any necessary investigations.

The action of disabling antivirus software during updates is contrary to maintaining a robust anti-virus strategy, making it the correct choice for what is NOT considered a responsibility under Requirement 5.2.