IR.L2-3.6.1[d]: Keep Your Incident Response Plan Maintained and Up to Date

Mapped to NIST 800-171 Requirement: 3.6.1
CMMC Assessment Objective: IR.L2-3.6.1[d]

What This Objective Means
Your incident response plan shouldn’t be static. This control ensures your IR documentation and procedures are actively maintained through:
• Scheduled reviews
• Post-incident updates
• Organizational or technical changes
• Compliance or regulatory shifts (e.g., DFARS, CMMC)
The goal is to confirm your plan is accurate and actionable based on how your systems and personnel currently operate.

Why It Matters
Outdated IR plans create serious risk:
• Contact information may be wrong during an emergency
• System changes may introduce new blind spots
• Regulatory requirements (e.g., CUI breach reporting) may not be reflected
• Staff may follow procedures that no longer align with actual tools or systems
Maintaining the plan ensures you stay prepared as your environment evolves.

How to Implement It
1. Establish a Review Schedule
• At minimum: Review the plan annually
• Also review after each major incident or organizational change
2. Define Update Triggers
• Changes in personnel or responsibilities
• Addition of new systems, networks, or cloud services
• Security tool upgrades (e.g., new SIEM, MDR provider)
• New regulatory guidance or compliance frameworks
3. Track Changes
• Maintain a version history with:
◦ Dates of review
◦ Summary of changes
◦ Approval signatures
4. Communicate Updates
• Notify the IR team when updates are made
• Re-distribute the latest version with highlighted changes
5. Validate During Exercises
• Use drills and tabletops to find outdated content and improve documentation

Evidence the Assessor Will Look For
• Documented revision history with timestamps and descriptions
• Version-controlled IR plans (with review dates)
• Meeting minutes or approval logs showing updates
• Post-incident reports that resulted in plan changes
• Policies requiring regular review

Common Gaps
• No formal review schedule
• IR plan is outdated or reflects legacy systems
• No change log or version control
• Staff unaware of latest IR procedures

How Cuick Trac Helps
Cuick Trac supports this requirement by:
• Helping organizations define a review and maintenance schedule for IR documentation
• Providing version-controlled templates and editable plans
• Offering workflows to prompt reviews after incidents or changes
• Ensuring the IR process reflects the current architecture and CUI handling methods
• Centralizing documentation for easy update and access
With Cuick Trac, your incident response documentation is always current and audit-ready.

Final CTA
Security evolves—your plan should too.
Schedule a Cuick Trac demo to keep your incident response process aligned with today’s risks and tomorrow’s requirements.

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