To verify policy violations, what log files should you check?

To verify policy violations, kernel security module log files are crucial as they specifically track security-related events and provide insights into actions taken by or against kernel-level security modules, such as SELinux or AppArmor. These logs record attempts to access denied resources or other activities that may breach established security policies, making them a primary source of information for identifying and investigating potential policy violations.

Authentication error logs, system error logs, and application logs provide valuable information about different aspects of system activity but do not focus specifically on the enforcement of security policies. Authentication error logs primarily capture login attempts and related failures, while system error logs encapsulate broader system-wide problems. Application logs often detail application-specific events and behaviors, but they lack the direct insights related to system security policy enforcement that the kernel security module log files provide.