CIS Control 8.9: Centralize Audit Log Collection and Retention
Scattered audit logs across your infrastructure create blind spots that auditors and attackers exploit. CIS Control 8.9 requires centralizing audit log collection to gain visibility into security events across your entire enterprise. This control is foundational to detecting threats, responding to incidents, and demonstrating compliance.
What this means
Centralize Audit Logs (CIS 8.9) requires organizations to aggregate audit logs from all enterprise assets—servers, applications, network devices, and endpoints—into a single repository or SIEM system. This centralization enables consistent log retention, faster threat detection, and simplified evidence gathering for audits. The control acknowledges that 'to the extent possible' implementation varies by organization size and infrastructure complexity, but the goal remains: eliminate isolated logs that cannot be monitored or audited.
How to comply
- 1.Inventory all systems and applications generating audit logs across your infrastructure
- 2.Deploy a centralized log aggregation platform (SIEM, cloud logging service, or log management tool)
- 3.Configure all assets to forward logs to the central repository with synchronized timestamps
- 4.Establish log retention policies meeting your compliance framework requirements (typically 90 days minimum)
- 5.Implement access controls to limit who can view and modify centralized logs
- 6.Test log forwarding and verify no critical events are being dropped or missed
- 7.Document your centralized logging architecture and any systems that cannot forward logs with justification
Evidence auditors look for
- SIEM or log management platform configuration showing all enterprise assets forwarding logs
- Log forwarding agent installation records across servers, endpoints, and applications
- Retention policy documentation specifying log storage duration and deletion schedules
- Access control matrix showing role-based permissions for log access and management
- Monthly audit reports confirming log ingestion rates and successful forwarding from all monitored assets
- Incident response logs demonstrating use of centralized logs for threat investigation
- Exception documentation for any systems unable to send logs with risk acceptance approval
Frequently asked questions
When will FAQs be available?
The FAQ for this control is currently being prepared.
GRCWatch automates log forwarding configuration validation and generates centralized audit reports proving all assets are sending logs to your repository—eliminating manual log inventory checks during audits.
See how GRCWatch handles this control automatically
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