NIST SP 800-53 Rev. 5 AT-3(5) — Processing Personally Identifiable Information

What this control requires

Trains personnel on processing PII, covering authority, risks, and obligations documented in privacy policies, notices, and agreements. This control supports the PII Processing Training Module capability within the Awareness and Training family.

In plain English

Trains personnel on processing PII, covering authority, risks, and obligations documented in privacy policies, notices, and agreements. In practice, this means you can prove you policy management-level controls on a defined cadence.

Why it matters

SP 800-53 is the catalogue every U.S. federal authorisation (FedRAMP, FISMA, CMMC) and most regulated industries point at. A missing control surfaces as a Plan of Action & Milestones (POA&M) item that an Authorizing Official must approve before the Authority To Operate is granted or renewed.

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 3PAO (FedRAMP) or Independent Assessor (NIST RMF) tests against NIST SP 800-53A assessment procedures. For each control they expect a documented implementation that addresses every assessment objective (Examine, Interview, Test) and an implementation summary in the System Security Plan.

Within Awareness and Training, the assessor will trace your implementation back to the catalogue reference (Control AT-3(5)) and look for objective evidence on the latest two assessment cycles.

How to implement

Policy Management

Docs. Keep each policy in version-controlled Markdown alongside the code that implements it; ship a signed PDF snapshot at each annual review and link the SHA into the SoA.

Operational checklist

• Policy. Document the trigger, the owner and the cadence.
• Information. Document the trigger, the owner and the cadence.
• Control. Document the trigger, the owner and the cadence.
• Privacy. Document the trigger, the owner and the cadence.
• Risk. Document the trigger, the owner and the cadence.
• Scope: management, information, privacy, personnel, personally identifiable information, capability, policy, agreements.

Evidence to collect

• Policy Document. A signed and version-controlled policy / standard / procedure document.
• Infra Scan. Continuous infrastructure-posture telemetry — AWS Config, Azure Policy compliance, GCP Organisation Policy, Wiz / Prisma findings.

Signed policy or standard documents the safeguard. Focus: Processing Personally Identifiable Information.

Common pitfalls

• Policies that no engineer has read; the version in Confluence drifts from the version that's actually being enforced.

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.

• ISO/IEC 27001:2022 A.6.6 — Confidentiality or non-disclosure agreements
• SOC 2 (2017 TSC) P3.2 — Consent Management for Personal Information Collection

Related controls in NIST SP 800-53 Rev. 5

• Control PM-25 — Minimization Of Personally Identifiable Information Used In Testing, Training, And Research
• Control PM-22 — Personally Identifiable Information Quality Management
• Control PT-3(1) — Data Tagging
• Control PT-3(2) — Automation
• Control SI-18 — Personally Identifiable Information Quality Operations
• Control AC-3(14) — Individual Access

References

• NIST Computer Security Resource Center — NIST SP 800-53 Rev. 5
• Catalogue identifier: Control AT-3(5)

Topics: governance riskawareness trainingprivacy managementpolicy management