Home / Resources / Incident Response Playbook

Incident Response Playbook

A structured, phase-driven framework for detecting, containing, eradicating, and recovering from cybersecurity incidents. Designed for enterprise teams and CyberVault SOC clients.

NIST SP 800-61 Aligned SANS Institute Model Time-Sensitive v3.2.1 (2025)

Incident Severity Classification

Use this matrix to determine initial response priority and escalation path.

Critical

P1
Response: < 15 min

High

P2
Response: < 1 hour

Medium

P3
Response: < 4 hours

Low

P4
Response: < 24 hours

01 Preparation

▼

Preparation is the foundation of effective incident response. This phase occurs before any incident takes place and focuses on building capabilities, defining roles, and establishing communication channels.

✓ Establish IR team structure & RACI matrix
✓ Deploy EDR/XDR, SIEM, and network monitoring tools
✓ Create communication templates & stakeholder contact lists
✓ Conduct tabletop exercises & phishing simulations
✓ Maintain offline backups & immutable storage verification
✓ Pre-configure forensic imaging & evidence handling kits
⚠ Critical: Review and update this playbook quarterly. Outdated contacts or missing tooling access is the #1 cause of response delays.

02 Detection & Analysis

▼

Identify anomalies, validate alerts, and determine scope. Speed and accuracy here dictate the entire response trajectory.

✓ Triage alerts from SIEM/SOC & correlate with threat intel
✓ Determine initial scope: affected hosts, users, data, timelines
✓ Classify severity (P1-P4) using the matrix above
✓ Preserve volatile evidence (RAM, network captures, logs)
✓ Isolate affected systems from critical networks (if safe)
✓ Activate IR war room & notify legal/compliance if data breach suspected
🔍 CyberVault SOC Tip: Never delete logs or reboot compromised systems before imaging. Preserve chain of custody for forensic validity.

03 Containment, Eradication & Recovery

▼

Stop the bleed, remove the threat, and restore normal operations. Balance speed with thoroughness to prevent reinfection.

✓ Implement short-term containment (block IPs, disable accounts, isolate segments)
✓ Identify root cause & attack vector (phishing, exploit, credential theft)
✓ Perform malware removal, patch vulnerabilities, reset compromised credentials
✓ Validate clean state via threat hunting & vulnerability scanning
✓ Restore systems from verified clean backups
✓ Implement long-term containment (WAF rules, MFA enforcement, network segmentation)
🔄 Recovery Note: Do not restore services until eradication is confirmed. Rushing reconnection is the most common cause of secondary breaches.

04 Post-Incident Activity

▼

Learn, improve, and harden. This phase transforms incident data into organizational resilience.

✓ Document complete timeline, actions taken, and evidence chain
✓ Conduct blameless post-mortem / lessons learned session
✓ Update detection rules, playbooks, and security controls
✓ Submit regulatory notifications if required (GDPR, HIPAA, state laws)
✓ Archive incident report & store in compliance repository
✓ Schedule follow-up threat hunting & security awareness training
📈 Metric Focus: Track MTTD (Mean Time to Detect) and MTTR (Mean Time to Respond). CyberVault clients average a 62% reduction in MTTR after playbook adoption.

🚨 Activate Incident Response

If you suspect a breach, ransomware infection, or active intrusion, bypass standard queues and contact our 24/7 Security Operations Center immediately.

24/7 SOC Hotline
+1 (800) 555-SECURE
Call Now

Need an Offline or Printable Version?

Download the full PDF playbook, incident report templates, and evidence handling checklists from the CyberVault Resource Hub.

📥 Download PDF Package 🔐 Access Client Portal