NIST SP 800-171 Rev. 3 3.6.4 — Incident Response Training

What this control requires

This control mandates providing incident response training to system users based on their assigned roles and responsibilities. Training should be provided within a defined time period of assuming a role or acquiring system access, and periodically thereafter. The content should be reviewed and updated regularly, or after significant events like system changes, incidents, or regulatory updates. This control supports the Incident Response Training System capability within the Incident Response (3.6) family.

In plain English

This control mandates providing incident response training to system users based on their assigned roles and responsibilities. In practice, this means you can prove you access management-level controls on a defined cadence.

Why it matters

DoD contractors and their subcontractors must implement all 100 SP 800-171 requirements to keep CUI handling contracts. Gaps are scored against the SPRS scoring methodology; below a 110-point starting score, each unmet requirement deducts points and a below-threshold score can disqualify a bid.

This control is rated high. Auditors expect a named owner, a remediation SLA, and a tooling artefact that evidences continuous operation.

What an auditor looks for

A C3PAO conducting a CMMC Level 2 assessment uses NIST SP 800-171A objectives. They expect a System Security Plan (SSP), Plan of Action & Milestones (POA&M) for any gaps, and objective evidence (configurations, ticket records, training records) for every requirement.

Within Incident Response, the assessor will trace your implementation back to the catalogue reference (Requirement 3.6.4) and look for objective evidence on the latest two assessment cycles.

How to implement

Incident Response

Runbook. Maintain a runbook keyed by incident type with named roles (IC, comms, scribe), an out-of-band comms channel, and a 72-hour timeline for external notification.

Tabletop. Run a quarterly tabletop exercise (ransomware, insider, supply-chain) and feed gaps back into the runbook.

Operational checklist

• Access. Document the trigger, the owner and the cadence.
• Response. Document the trigger, the owner and the cadence.
• Time. Document the trigger, the owner and the cadence.
• System. Document the trigger, the owner and the cadence.
• Incident. Document the trigger, the owner and the cadence.
• Scope: management, content, time, security, response.

Evidence to collect

• Ticketing Workflow. ticketing_workflow evidence

Workflow metrics (ServiceNow, Jira) show approvals and remediation. Focus: Incident Response Training.

Common pitfalls

• Runbooks that name a role but no person, or list a paging channel that no longer exists.

How it maps to other frameworks

Computed from shared tags, control component and key-operation subjects — handy when you are reconciling controls across an audit.

• NIST SP 800-53 Rev. 5 IR-2 — Incident Response Training
• SOC 2 (2017 TSC) CC7.4 — Incident Response
• ISO/IEC 27001:2022 A.5.27 — Learning from information security incidents
• BSI C5:2020 HR-03 — Security training and awareness programme
• CIS Controls v8 17.6 — Define Mechanisms for Communicating During Incident Response

Related controls in NIST SP 800-171 Rev. 3

• Requirement 3.6.2 — Incident Monitoring, Reporting, and Response Assistance
• Requirement 3.2.1 — Literacy Training and Awareness
• Requirement 3.3.6 — Audit Record Reduction and Report Generation
• Requirement 3.14.1 — Flaw Remediation
• Requirement 3.6.5 — Incident Response Plan
• Requirement 3.6.1 — Incident Handling

References

• NIST Computer Security Resource Center — NIST SP 800-171 Rev. 3
• Catalogue identifier: Requirement 3.6.4

Topics: incident responseawareness trainingchange managementsecurity training