Why Reviewing Audit Logs Matters
Audit logs are like security camera footage for your digital systems. They record who did what, when, and where — and they’re one of your best defences against threats.
If something goes wrong, the logs can tell the story, but only if you check them.
Best Practice Tips for Reviewing Audit Logs
1. Check Logs Regularly
Don’t just collect logs, review them on a daily, weekly, or monthly schedule depending on your risk level.
Automate alerts for high-risk events (e.g. failed logins, privilege escalation).
2. Know What to Look For
Multiple failed login attempts
Access from unusual locations or times
Users accessing data they shouldn’t
Changes to security settings or user permissions
3. Keep Logs Secure and Tamper-Proof
Store logs in a secure, centralized location (e.g. SIEM system).
Use write-once, read-many (WORM) storage if available.
Limit access to logs to authorized personnel only.
4. Use Log Management Tools
Tools like Splunk, Graylog, or Microsoft Sentinel help sort through large volumes of data.
Set up filters, dashboards, and automated alerts.
5. Retain Logs for Compliance
Keep logs for a set period (e.g., 6–12 months or more) depending on industry regulations.
Ensure you meet GDPR, HIPAA, or other legal requirements.
6. Review with Context
Cross-reference audit logs with HR records, access control lists, and incident reports.
Don’t just flag the “what” try to understand the “why.”
Simple Analogy
Think of audit logs as your digital paper trail. Ignoring them is like running a shop without checking your CCTV — you might not notice a break-in until it’s too late.
