NIST SP 800-53 Rev. 5 PL-5 — Privacy Impact Assessment

What this control requires

Conduct and document privacy impact assessments to identify and mitigate risks to personally identifiable information. This control supports the Privacy Impact Assessment Report capability within the Planning family.

In plain English

Conduct and document privacy impact assessments to identify and mitigate risks to personally identifiable information. In practice, this means you can prove you information 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 Planning, the assessor will trace your implementation back to the catalogue reference (Control PL-5) and look for objective evidence on the latest two assessment cycles.

How to implement

Secure Development

Pipeline. Require code review, SAST (Semgrep / Snyk Code), SCA (Dependabot / Renovate), secret-scanning and IaC scanning in the merge pipeline.

Branch protection. Protected branches enforce reviews, signed commits and passing CI before merge; document the protection rules as the control evidence.

Code Review Testing

Pipeline. Require at least one human reviewer plus passing CI (lint, type, unit, security scan) before merge — protected branches enforce this.

Operational checklist

• Information. Document the trigger, the owner and the cadence.
• Review. Document the trigger, the owner and the cadence.
• Control. Document the trigger, the owner and the cadence.
• Testing,. Document the trigger, the owner and the cadence.
• Impact. Document the trigger, the owner and the cadence.
• Scope: management, information, privacy, mitigate risks, personally identifiable information, assessments, assessment, review.

Evidence to collect

• Code Repo Scan. Source-control evidence — branch protection, required reviewers, CI status, SCA / SAST reports.

Source control pipelines (GitHub, GitLab) enforce SDLC guardrails. Focus: Privacy Impact Assessment.

Common pitfalls

• CI security checks set to warn-only; the merge button is faster than the security feedback.

Related controls in NIST SP 800-53 Rev. 5

• Control SI-19(6) — Differential Privacy
• Control SA-12(7) — Assessments Prior To Selection / Acceptance / Update
• Control RA-4 — Risk Assessment Update
• Control CA-7 — Continuous Monitoring
• Control PM-25 — Minimization Of Personally Identifiable Information Used In Testing, Training, And Research
• Control PM-6 — Measures Of Performance

References

• NIST Computer Security Resource Center — NIST SP 800-53 Rev. 5
• Catalogue identifier: Control PL-5

Topics: governance risksecure developmentcode review testingdevsecopsprivacy management