What is a key aspect of the CMMC Level 2 practice for System Auditing per AU.L2-3.3.1?

A key aspect of the CMMC Level 2 practice for System Auditing, specifically per AU.L2-3.3.1, is the creation and retention of system audit logs. This practice emphasizes the importance of maintaining detailed records of system activities, which are essential for enabling organizations to monitor and analyze events that occur within their systems.

The creation of audit logs provides a comprehensive history of actions taken on the system, including who accessed the system, what changes were made, and when these actions took place. This information is crucial for identifying potential security incidents, conducting forensic analysis, and ensuring accountability within the organization. Additionally, retaining these logs over a defined period ensures that organizations have access to a sufficient amount of historical data to review incidents and identify patterns that may indicate security vulnerabilities or breaches.

In contrast, the other options do not align with the core requirement of AU.L2-3.3.1, which focuses on the generation and preservation of audit records. While compliance with international auditing standards, conducting annual reviews of policies, and retaining records for a specific time frame are important audit practices, they do not specifically address the requirement for the systematic creation and retention of audit logs that serve as a fundamental component of an effective auditing process.