A.8.15 Logging would include:
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Logging Policy and Procedures: Documentation of a policy and procedures that outline the organization's logging practices. The policy should specify what events are logged, the format of logs, retention periods, and access controls to the logs.
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Log Configuration Settings: Records of the configuration settings for logging systems, including details of what events are logged, log levels, and log storage locations.
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Log Entries: Access to log entries that capture security-relevant events and activities, such as login attempts, privilege escalations, file access, system changes, and other relevant events.
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Log Analysis: Evidence of log analysis procedures and tools used to monitor and review log entries for potential security incidents or anomalies.
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Regular Review: Records of regular log reviews conducted by authorized personnel to detect unusual or suspicious activities.
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Incident Response Logs: Records of security incidents detected through log analysis, including the actions taken to mitigate the incidents and the resolution outcomes.
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Compliance Documentation: Evidence of compliance with relevant regulations, standards, and internal policies regarding logging practices and data privacy.
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Access Controls: Evidence of access controls in place to ensure that only authorized personnel can access and modify logs.
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Training Records: Records of training provided to personnel responsible for logging activities, ensuring they understand their roles and responsibilities in log management and analysis.
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Continuous Improvement Efforts: Evidence of ongoing efforts to improve logging practices based on lessons learned from security incidents and changes in the threat landscape.
Effective logging is crucial for monitoring and detecting security events, facilitating incident response, and maintaining an accurate record of system activities. As an auditor, I would assess the presence and effectiveness of these pieces of evidence to ensure that logging practices are in line with industry best practices and that potential security issues are promptly identified and addressed.
