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Glib Rulev
Glib Rulev

OWASP TOP 9: Security Logging and Monitoring Failures

Even the strongest security controls can be rendered useless if attacks go undetected. Poor logging and insufficient monitoring leave organizations blind to threats until it’s too late.

🔍 What is Security Logging and Monitoring Failure?

It refers to the lack of visibility into your systems. Without proper logs, alerts, and monitoring processes, it’s impossible to detect suspicious activity — like brute force attempts, privilege abuse, or data exfiltration — until after the damage is done.

🧪 Example

An attacker exploits a vulnerability and gains unauthorized access to an admin panel. If access logs aren’t captured — or alerts aren’t configured for abnormal admin activity — this breach can go unnoticed for weeks or months.

✅ Best Practices to Prevent This

  1. Centralized Logging: Use a centralized logging solution (e.g., ELK stack, Loki + Promtail, or SIEM tools) to capture and correlate events across services and environments.
  2. Log Important Events: Focus on sensitive actions: authentication attempts, permission changes, access to sensitive data, failed authorizations, and input validation failures.
  3. Set Up Real-Time Alerts: Don’t just log—monitor. Trigger alerts on anomalies: repeated login failures, unexpected access patterns, or admin actions during odd hours.
  4. Protect Log Integrity: Ensure logs are tamper-proof and access-controlled. An attacker should never be able to cover their tracks.
  5. Regularly Review and Audit Logs: Set a schedule to review logs for trends and indicators of compromise. Pair with automated tools to flag anomalies proactively.
  6. Log Access Violations: Any denied or failed access attempt is a signal — don’t ignore it. It could be probing before a full-scale attack.

🛡️ Remember: Logging and monitoring aren’t just for compliance — they’re your early warning system. Without them, you’re flying blind in a storm of evolving threats.

Start logging like your security depends on it — because it does.