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Ransomware Incident
Response Playbook

A step-by-step 76-item checklist for the first 24 hours of a ransomware attack. Built for SOC teams, IR leads, and CISOs who need to act fast and avoid costly mistakes.

Phase 1 · 0 – 1 Hour
18
Confirm & Classify, Evidence Preservation (Do This Before Anything Else), Activate IR Team
Phase 2 · 1 – 4 Hours
21
Network Isolation, Protect Backups (Critical), Account & Credential Lockdown, Notifications
Phase 3 · 4 – 24 Hours
17
Threat Actor Eviction, Forensic Investigation, Recovery Decision
Phase 4 · 24 Hours+
20
Phased Restoration, Enhanced Monitoring, Post-Incident
76 action items across 4 phases
Interactive checkboxes — check off as you work
Critical items flagged for immediate action
IR contact directory template
Based on NIST SP 800-61r2 & CISA guidance
Print-ready PDF format

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