To comply with PCI logging requirements as outlined in Requirement 10 of the Payment Card Industry Data Security Standards (PCI DSS), organizations must implement comprehensive logging and monitoring mechanisms to track and monitor all access to system components. These mechanisms include maintaining audit trails of user access, especially for users with administrative privileges, logging individual user accesses to cardholder data, and documenting invalid access attempts. Automated audit trails should be established for various critical activities, including the initialization and pausing of audit logs, and the creation or deletion of system-level objects. Time synchronization technology is recommended to ensure accurate log time-stamping, while access to these logs should be restricted to personnel with business-related needs. Logs must be backed up to a centralized server to prevent unauthorized modifications, and file-integrity monitoring should be employed to detect any changes. Regular reviews of security events and logs are crucial for identifying anomalies, and audit trails should be retained for at least one year, with immediate access to the last three months. For service providers, additional requirements include timely detection and response to failures of critical security controls. Compliance with these logging policies and procedures is essential for safeguarding cardholder data and maintaining network security.