Security Logging
Collect, structure and retain the events required for detection, investigation and audit.
BeginnerLoggingOperationsGovernance
Where it fits in the lifecycle
- Plan
- Code
- Build
- Test
- Release
- Deploy
- Operate
- Monitor
- Operate Runtime security, secrets rotation and configuration reconciliation.
- Monitor Detection engineering, SIEM, compliance evidence and incident response.
Overview
Useful security logging means structured events with stable field names, tamper-resistant storage, and retention long enough to investigate a breach discovered months later.
Why it matters
Investigations are bounded by what was logged and how long it was kept.
How it works
- 01Applications emit structured JSON with correlation identifiers.
- 02Agents ship logs to central storage with restricted write access.
- 03Retention and immutability are configured per compliance requirement.
Common tools
Fluent BitLokiOpenTelemetryKubernetesLinuxAWS
Implementation examples
jsonStructured audit event
{ "ts": "2026-02-11T09:14:03Z", "event": "auth.login.failed", "actor_id": "u_8814", "source_ip": "203.0.113.44", "reason": "invalid_password", "trace_id": "9f2c1b..."}Best practices
- Log auth, authorisation and configuration changes at minimum.
- Redact sensitive fields at source.
Common mistakes
- Logging request bodies containing credentials or personal data.