Build the timeline before the theory
Build an evidence timeline that distinguishes trigger, detection, response, and recovery before root-cause claims.
Incident review The outage lasted 47 minutes. The first draft says firewall rule caused outage, but the detection and recovery facts are scattered. One incident can contain several causes: trigger, escape, response delay, and recovery friction. Evidence timeline Trigger -> Detection -> Response -> Recovery Separate the event that started the incident from the controls that noticed it and the actions that restored it. Theory Firewall rule caused everything The RCA can assign different countermeasures to different failure points. A cause claim without a timestamp is usually too blurry to fix. 01 Evidence 02 Sequence 03 Claims Decision 1 A…
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