# Standards References - Post-Incident Lessons Learned

## NIST SP 800-61 Rev. 2 - Section 3.4 Post-Incident Activity
- 3.4.1: Lessons Learned meetings after each significant incident
- 3.4.2: Using Collected Incident Data for trending and metrics
- Recommends formal review within days of resolution

## NIST SP 800-61 Rev. 3 - Continuous Improvement
- Recover (RC) function: Learning from incidents
- RC.CO-03: Recovery activities and progress communicated
- Emphasis on continuous improvement of IR capabilities

## SANS PICERL - Lessons Learned Phase
- Phase 6: Final phase of incident handling
- Formal review with all stakeholders
- Document improvements and update procedures

## MITRE ATT&CK - Detection Gap Analysis
- Map incident techniques to ATT&CK framework
- Identify detection gaps in current monitoring
- Develop new detection rules based on observed TTPs

## ISO 27001 - Clause 10: Improvement
- 10.1: Nonconformity and corrective action
- 10.2: Continual improvement
- Requires organizations to learn from security incidents

## Google SRE Post-Mortem Culture
- Blameless approach to incident review
- Focus on systemic issues rather than human error
- Document and share learnings broadly
