Cyber Incident Response Plan Templates, Steps and Best Practices
A complete resource for building, testing, and executing an incident response plan. Based on NIST SP 800-61 and refined through 23+ years of real-world breach investigations. Organizations with a tested IR plan reduce breach costs by $2.66 million on average.
The 6 Phases of Incident Response
The NIST framework defines six phases that form a continuous improvement cycle for handling security incidents.
Preparation: Build your IR team, define roles, deploy detection tools, and create playbooks
Detection and Analysis: Identify events through SIEM, EDR, and threat hunting, then assess scope and severity
Containment: Isolate affected systems and block threats while preserving forensic evidence
Eradication: Remove malware, close vulnerabilities, and eliminate attacker persistence mechanisms
Recovery: Restore systems from clean backups in prioritized sequence with enhanced monitoring
Lessons Learned: Conduct post-incident review and update plans, controls, and training
What Your IR Plan Must Address
An effective plan covers four critical dimensions. Every major compliance framework requires documented incident response capabilities.
People and Processes
- IR team roster with defined roles, decision authority, and escalation paths
- Step-by-step playbooks for ransomware, data breach, and cloud incidents
- Regular tabletop exercises to test readiness under simulated pressure
Technology and Communication
- Detection tools: SIEM, EDR, network analysis, and AI-powered threat hunting
- Forensic evidence collection and chain of custody procedures
- Notification plans for regulators, law enforcement, customers, and insurance
Frameworks That Require an IR Plan
An incident response plan is not optional. These frameworks all mandate documented IR capabilities.
CMMC 2.0
Mandates incident response under the IR domain. Required for all defense contractors handling CUI.
HIPAA
Required as part of the Security Rule's administrative safeguards for all covered entities and business associates.
NIST 800-171
Includes 3 IR requirements for organizations handling Controlled Unclassified Information.
NIST 800-53
Devotes an entire control family to incident response with detailed implementation guidance.
Related Services and Guides
Frequently Asked Questions
What is an incident response plan?
An incident response plan is a documented, structured approach that defines how your organization detects, contains, eradicates, and recovers from cybersecurity incidents. It is the operational playbook your team follows when a security event occurs.
How much does a data breach cost without an IR plan?
According to the IBM Cost of a Data Breach Report 2024, the average cost is $4.88 million. Organizations with a tested IR plan and dedicated team reduce that cost by $2.66 million on average.
How often should we test our incident response plan?
At minimum, conduct a tabletop exercise quarterly and a full simulation annually. Update the plan whenever significant changes occur in your environment, team, or threat landscape. Most compliance frameworks require at least annual testing.
What is the difference between NIST SP 800-61 and SANS IR frameworks?
Both follow similar models. NIST SP 800-61 defines six phases (Preparation, Detection/Analysis, Containment, Eradication, Recovery, Lessons Learned) and is referenced by most US compliance frameworks. SANS uses a similar structure. We recommend NIST for regulatory alignment.
Can PTG build an incident response plan for my organization?
Yes. We develop customized IR plans aligned to your industry, compliance requirements, and infrastructure. Our plans include playbooks for ransomware, data breach, and cloud incidents, plus tabletop exercise facilitation.
Do you provide digital forensics during an active incident?
Yes. Craig Petronella is an NC Licensed Digital Forensic Examiner (License #604180-DFE). Our forensics team handles evidence preservation, root cause analysis, and expert witness testimony for litigation.
Build Your Incident Response Plan Today
Every day without a tested IR plan is a day you are exposed to catastrophic risk. Let us help you prepare.