Remember to customize it to your organization’s specific needs and environment:

Incident Response Plan for NIST SP 800-171 Compliance

1. Purpose

The purpose of this incident response plan is to outline the procedures and responsibilities for responding to security incidents related to Controlled Unclassified Information (CUI) in accordance with NIST SP800-171 requirements.

2. Incident Categories

Identify and categorize incidents based on their severity and impact. Common categories include:

• Unauthorized access
• Malware infections
• Data breaches
• Insider threats
• Denial-of-service attacks

3. Incident Response Team (IRT)

Establish an IRT responsible for managing incidents. The team should include representatives from IT, legal, compliance, and management.

4. Incident Detection and Reporting

• Monitor systems for signs of     incidents.
• Report incidents promptly to the     IRT.
• Document the incident details.

5. Incident Handling Procedures

a. Initial Response

1. Containment: Isolate affected systems to prevent further     damage.
2. Assessment: Determine the scope and impact of the incident.
3. Notification: Notify relevant stakeholders (management, legal, etc.).

b. Investigation and Analysis

1. Forensics: Collect evidence for analysis.
2. Root Cause Analysis: Identify how the incident occurred.
3. Impact Assessment: Evaluate the impact on CUI.

c. Mitigation and Recovery

1. Remediation: Apply necessary patches, updates, or configuration changes.
2. Data Restoration: Restore affected systems and data.
3. Communication: Keep stakeholders informed about progress.

d. Post-Incident Activities

1. Lessons Learned: Conduct a post-incident review.
2. Documentation: Update incident records and lessons learned.
3. Improvement: Implement changes to prevent similar incidents.

6. Communication and Reporting

1. Internal: Regularly update management and stakeholders.
2. External: Comply with legal and regulatory reporting     requirements.
3.  to track remediation     efforts.

7. Training and Testing

1. Train staff on incident response     procedures.
2. Conduct regular tabletop     exercises and simulations.

8. References

 
1. How to write a System Security Plan (YouTube video)
2. Incident Response Testing Support

Remember that this plan should be regularly reviewed, tested, and updated to stay effective and aligned with NIST 800-171 requirements.

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