A cybersecurity incident can strike any organization, regardless of size or industry. An incident response plan is a written document formally approved by senior leadership that helps organizations before, during, and after a security incident. This guide explains what these plans contain, how they are structured according to NIST and CISA frameworks, and what steps organizations should follow to minimize damage from cyberattacks.
Sist kontrollert: 2026-06-06
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Definition: A written document formally approved by senior leadership that helps organizations before, during, and after a security incident. · Purpose: Limit or prevent damage from cyberattacks or security breaches. · Benefit: Minimizes impact and helps resume normal operations quickly. · Key Components: Includes 8 essential elements such as asset identification, risk assessment, response procedures, etc.
How we researched this
Last checked: 15 January 2025.
Sources reviewed: official government cybersecurity documentation (NIST, CISA, U.S. HHS), industry blog posts from established cybersecurity vendors (Palo Alto Networks, Splunk, StickmanCyber, Cynomi, Exabeam).
No primary research, no interviews, and no hands-on testing of incident response tools was conducted for this article.
Key facts about incident response plans
- NIST SP 800-61r3 defines a four-phase incident response lifecycle (Cynomi)
- 4 phases in NIST model; 5 steps in SANS process
- At least once per year (Splunk, citing NIST SP 800-61)
- At least quarterly testing through exercises (Splunk, citing CISA)
| Attribute | Details |
|---|---|
| Definition | A written document formally approved by senior leadership that helps organizations before, during, and after a security incident. |
| Purpose | Limit or prevent damage from cyberattacks or security breaches. |
| Benefit | Minimizes impact and helps resume normal operations quickly. |
| Primary framework | NIST SP 800-61r3 Computer Security Incident Handling Guide |
| Lifecycle phases | 4 phases: preparation; detection and analysis; containment, eradication, and recovery; post-incident activity |
| Alternative framework | SANS 5-step process: preparation, identification, containment, recovery, lessons learned |
What are incident response plans?
An incident response plan is a documented strategy outlining how an organization will detect, respond to, and recover from cybersecurity attacks or other disruptions. According to Palo Alto Networks, this written document formally approved by senior leadership helps organizations before, during, and after a security incident. The plan’s primary purpose is to minimize damage, contain threats, and restore normal operations as quickly as possible.
The NIST incident response process is a cyclical activity, a process of continuous learning and improvement to discover how to better defend the organization against cyber attacks. As explained by StickmanCyber, NIST emphasizes that incident response is not a linear activity that ends once systems are restored. Instead, each incident generates lessons that feed back into preparedness for future threats.
Definition and purpose
NIST SP 800-61 and associated guidance recommends that a comprehensive incident response plan includes clearly described mission, strategies, and goals; management approval; an organizational response model; communication plans; metrics; and a maturity roadmap. According to Splunk, these elements ensure the plan is actionable, authorized, and aligned with organizational priorities. For organizations handling personally identifiable information, NIST SP 800-53 recommends extending the plan with processes for assessing whether notification to individuals or regulators is necessary, evaluating harm to affected persons, and identifying relevant privacy requirements.
Key components
A mature incident response plan should define a dedicated incident response manager, a core response team, a risk classification matrix for severity, and clear criteria for when the plan is activated and deactivated. Palo Alto Networks recommends establishing a detailed communication scheme covering internal and external alerting, expected messages from the incident response manager, and guidelines for information to media, customers, and authorities. NIST recommendations also emphasize documented training and exercise regimes, including tabletop exercises and full-scale simulations, to ensure the response team can follow the plan under stress.
The eight basic elements of an incident response plan
A comprehensive incident response plan should include eight essential elements to ensure organizational readiness. These elements are: identification and prioritization of critical assets; determination of potential risks and threat vectors; development of response procedures tailored to different incident types; creation of a dedicated incident response team with defined roles; establishment of a communication plan covering internal and external stakeholders; regular testing through exercises such as tabletop scenarios and simulations; processes for continuous improvement based on lessons learned; and integration with business continuity planning to ensure seamless operations during and after incidents.
What are the 7 stages of incident response?
The incident response lifecycle is commonly described as a seven-phase cycle, though the exact grouping of activities varies between frameworks. Cynomi notes that NIST SP 800-61r3 defines the Computer Security Incident Handling Guide, which establishes the foundational structure that most organizations follow today.
Preparation
The preparation phase involves establishing policies, assigning roles, providing training, and procuring tools. According to StickmanCyber, this phase also includes maintaining an inventory of IT assets and defining what constitutes a reportable incident. Without thorough preparation, response teams will struggle to act effectively when an incident occurs.
Identification
During identification, organizations monitor logs and systems, use detection tools, and assess severity against predefined criteria. Cynomi explains that this phase determines whether observed anomalies represent genuine security incidents requiring full response activation.
Containment
Containment focuses on isolating affected systems to prevent the incident from spreading. This short-term containment prevents immediate damage while long-term containment strategies are implemented to maintain business operations during the response.
Eradication
Eradication involves removing the threat from affected systems. According to Cynomi, this includes eliminating malware, closing vulnerabilities that allowed the breach, and ensuring the attacker no longer has access.
Recovery
Recovery encompasses restoring systems from backups, rebuilding compromised systems, and verifying that normal functionality has returned. Cynomi notes that verification is essential—teams must confirm that systems are truly restored before declaring the incident resolved.
Lessons learned
After recovery, the team conducts a post-incident review to document what happened, what worked, and what could be improved. Exabeam emphasizes that NIST places strong emphasis on post-incident activities including root cause analysis, documentation, policy updates, and sharing lessons to prevent future attacks.
Post-incident activity
NIST’s fourth phase overlaps with lessons learned but specifically focuses on updating documentation, refining procedures, and feeding insights back into the preparation phase for the next cycle. This continuous improvement loop is what makes the incident response lifecycle truly effective over time.
What are the 5 steps of incident response?
The NIST incident response lifecycle can also be described as five steps that group activities differently from the seven-phase model. According to StickmanCyber, this alternative grouping provides a slightly different perspective on the same underlying activities.
Preparation
The first step mirrors the preparation phase: establishing the foundation for effective response. This includes creating policies, defining roles, training staff, and ensuring tools are in place before any incident occurs.
Detection and analysis
Detection and analysis combines identification with initial assessment. Cynomi notes that this involves continuous monitoring of logs and systems, employing detection tools, and evaluating severity against predefined criteria. The goal is to confirm whether an incident has occurred and understand its scope.
Containment, eradication, and recovery
The third step groups containment, eradication, and recovery together as a unified response phase. According to Cynomi, this grouping recognizes that these activities often overlap in practice—containment may continue while eradication begins, and recovery may start before eradication is fully complete.
Post-incident activity
After the immediate threat is resolved, post-incident activity focuses on documenting the incident, conducting root cause analysis, and updating policies and procedures based on lessons learned.
Lessons learned
The fifth step emphasizes the cyclical nature of incident response. NIST stresses that incident response is a continuous learning process, with insights from each incident informing preparations for future threats.
How to create an incident response plan
Creating an effective incident response plan requires aligning with established frameworks while adapting to organizational context. According to Splunk, citing NIST SP 800-61, the plan should be formally reviewed at least once per year and updated whenever significant changes occur in the organization or threat landscape.
Establish foundation and approval
The plan must begin with executive sponsorship. Senior leadership should formally approve the plan, define its scope, and allocate necessary resources. Without this foundation, the plan lacks authority and may not be followed during a crisis.
Define roles and assemble team
Organizations need a dedicated incident response manager and a core response team. Palo Alto Networks recommends defining clear responsibilities for each team member and establishing backup personnel for critical roles.
Develop procedures and communication plans
Procedures should be documented in detail, covering detection, containment, eradication, recovery, and post-incident activities. The communication plan must address internal alerting, external notifications to regulators or customers, and media relations guidelines.
Test and maintain the plan
CISA recommends testing and updating the plan at least quarterly through exercises and reviews. Splunk notes that regular testing identifies gaps and improvement opportunities before an actual incident occurs.
Incident response plans in the healthcare sector
Healthcare organizations face particular challenges because they handle sensitive patient data and must maintain continuous access to critical systems. According to the U.S. Department of Health and Human Services, incident response plans in healthcare should have the explicit goal of minimizing the overall impact of cyber incidents, with clear procedures for identification, response, and recovery.
The HHS guidance emphasizes that healthcare incident response plans must address protection of health information, compliance with HIPAA requirements, and coordination with sector-specific resources such as healthcare CERTs. This sector-specific adaptation demonstrates how the NIST framework is applied differently depending on regulatory context and operational requirements.
“The NIST incident response framework, documented in the Computer Security Incident Handling Guide (NIST Special Publication 800‑61), is intended to assist organizations in planning and executing an effective incident response strategy.”
– Exabeam (omtale av NIST), Sikkerhetsleverandør og faglig kommentator
“An incident response plan is a documented strategy outlining how an organization will detect, respond to, and recover from cybersecurity attacks or other disruptions.”
– Palo Alto Networks, Sikkerhetsleverandør og faglig kommentator
For å redusere kostnader og forbedre responstiden, anbefaler mange eksperter å følge NIST-veiledning for hendelsesrespons som et praktisk rammeverk.
Frequently asked questions
What are the 5 C’s of incident management?
The 5 C’s refer to characteristics of effective incident communication: Current (information is up-to-date), Complete (all necessary details are included), Concise (information is focused and brief), Connected (information flows between appropriate parties), and Coordinated (response activities are synchronized). These principles guide how incident response teams communicate during and after security events.
What are P1, P2, P3, and P4 incidents?
Incident priority levels typically range from P1 (critical) to P4 (low). P1 incidents involve active attacks, data breaches, or systems completely unavailable. P2 incidents have significant impact but workarounds exist. P3 incidents cause limited impact with available mitigations. P4 incidents are minor issues with minimal business effect. Response speed, resources, and escalation paths differ based on assigned priority.
How do I create an incident response plan?
Start by gaining executive sponsorship and defining scope. Assemble a response team with clear roles. Develop procedures aligned with NIST SP 800-61 or SANS guidelines. Create communication plans for internal and external stakeholders. Test the plan quarterly through exercises and review formally at least annually.
What is the difference between an incident response plan and a disaster recovery plan?
An incident response plan focuses on detecting, responding to, and recovering from cybersecurity incidents. A disaster recovery plan focuses on restoring IT infrastructure and business systems after a major disruption, whether caused by cyberattack, natural disaster, or other events. The two plans should be coordinated but serve distinct purposes.
What roles are typically included in an incident response team?
A typical team includes an incident response manager who coordinates activities, technical analysts who investigate and contain threats, a communications lead who handles internal and external messaging, legal counsel who addresses compliance and liability questions, and subject matter experts who provide specialized knowledge about affected systems or processes.
How often should an incident response plan be tested?
CISA recommends testing at least quarterly through exercises such as tabletop simulations or full-scale drills. NIST guidance recommends formal review at least annually, with additional reviews triggered by significant organizational changes or after actual incidents.
What is the first step in incident response?
Preparation is the first and most critical step. This includes establishing incident response policies, defining roles and responsibilities, training team members, and ensuring necessary tools are available. Without thorough preparation, response efforts will be disorganized when an incident occurs.
Sources cited
- NIST Special Publication 800-61 Revision 3
- Palo Alto Networks – Incident Response Plan
- Splunk – Incident Response Plans
- StickmanCyber – Incident Response Frameworks
- Cynomi – NIST Incident Response Plan
- Exabeam – NIST Incident Response
- U.S. Department of Health and Human Services
- CISA – Cybersecurity Performance Goals