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Security Operations · Foundational

Post-Incident Activity

The final incident response phase covering lessons learned, reporting, evidence retention and process improvement.

Definition

Post-incident activity includes a lessons-learned meeting, root cause analysis, updating plans and detections, final reporting and retaining evidence according to policy. NIST recommends holding the review within several days of the incident's end.

Example

A review meeting that results in new detections and an updated phishing playbook.

Exam tip

Lessons learned is the most frequently skipped but critical phase.

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