# IR-04 Incident Handling — NIST 800-53 Rev5 control

> FedRAMP Consolidated Rules for 2026 v2026.07.14.01 · updated 2026-07-14
> Canonical page: /control/ir-4

Canonical id: `ir-4` · family `IR`

> a. Implement an incident handling capability for incidents that is consistent with the incident response plan and includes preparation, detection and analysis, containment, eradication, and recovery; b. Coordinate incident handling activities with contingency planning activities; c. Incorporate lessons learned from ongoing incident handling activities into incident response procedures, training, and testing, and implement the resulting changes accordingly; and d. Ensure the rigor, intensity, scope, and results of incident handling activities are comparable and predictable across the organization.

_Control title and statement: NIST SP 800-53 Rev5 catalog (the pinned commit is in `/api` under `control_text`). The FedRAMP rules reference these controls by id only; everything below is what FedRAMP says about this id._

## Rev5 baseline membership

- certification class B (in the annual independent assessment)
- certification class C (in the annual independent assessment)
- certification class D (in the annual independent assessment)

## Key Security Indicators that reach it

- `KSI-INR-AAR` — Generating After Action Reports (Incident Response)
  Incident after action reports are generated and lessons learned are persistently incorporated.
- `KSI-INR-RIR` — Reviewing Incident Response Procedures (Incident Response)
  The effectiveness of documented incident response procedures is persistently reviewed.
- `KSI-INR-RPI` — Reviewing Past Incidents (Incident Response)
  Past incidents are persistently reviewed for patterns or vulnerabilities that were not previously apparent or identified.

## FedRAMP guidance

{
  "guidance": [
    "Follow the FedRAMP Incident Evaluation and Communication rules."
  ]
}

## Annual independent assessment

In the annual assessment subset for class B, C, D.