# NIST SP 800-53 Rev. 5 SI-19(6) — Differential Privacy - Source: https://support.icompaas.com/compliance/nist-sp-800-53-rev-5/si-19-6-differential-privacy - Section: [Compliance](https://support.icompaas.com/compliance) › [NIST SP 800-53 Rev. 5 Controls](https://support.icompaas.com/compliance/nist-sp-800-53-rev-5) › SI — System and Information Integrity - Last updated: 2026-06-05 - Publisher: iCompaas, Inc. (https://www.icompaas.com) **NIST SP 800-53 Rev. 5**·Control `SI-19(6)`·high·Component: **System and Information Integrity** ## What this control requires > Prevent disclosure of personally identifiable information by introducing non-deterministic noise to mathematical results before reporting. Differential privacy ensures that the analysis results remain similar whether or not a single individual's data is included, balancing privacy protection with data accuracy. This control supports the Data Privacy, Statistical Analysis capability within the System and Information Integrity family. > > — NIST SP 800-53 Rev. 5, Control SI-19(6) ### In plain English Prevent disclosure of personally identifiable information by introducing non-deterministic noise to mathematical results before reporting. In practice, this means you can prove you individual 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 **System and Information Integrity**, the assessor will trace your implementation back to the catalogue reference (Control SI-19(6)) 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 - **Individual.** Document the trigger, the owner and the cadence. - **Information.** Document the trigger, the owner and the cadence. - **Data.** Document the trigger, the owner and the cadence. - **Review.** Document the trigger, the owner and the cadence. - **Protection.** Document the trigger, the owner and the cadence. - **Scope:** management, information, privacy, system, individual, personally identifiable information, analysis, protection. ## 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: Differential Privacy. ## Common pitfalls - CI security checks set to warn-only; the merge button is faster than the security feedback. ## 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. - [**SOC 2 (2017 TSC) P5.2** — Correction and Amendment of Personal Information](https://support.icompaas.com/compliance/soc-2-trust-services-criteria/p5-2-correction-and-amendment-of-personal-information) - [**NIST SP 800-171 Rev. 3 3.13.13** — Mobile Code](https://support.icompaas.com/compliance/nist-sp-800-171-rev-3/3-13-13-mobile-code) ## Related controls in NIST SP 800-53 Rev. 5 - [**Control SI-18(3)** — Collection](https://support.icompaas.com/compliance/nist-sp-800-53-rev-5/si-18-3-collection) - [**Control PL-5** — Privacy Impact Assessment](https://support.icompaas.com/compliance/nist-sp-800-53-rev-5/pl-5-privacy-impact-assessment) - [**Control SI-18(4)** — Individual Requests](https://support.icompaas.com/compliance/nist-sp-800-53-rev-5/si-18-4-individual-requests) - [**Control SI-18(1)** — Automation Support](https://support.icompaas.com/compliance/nist-sp-800-53-rev-5/si-18-1-automation-support) - [**Control SI-19** — De-Identification](https://support.icompaas.com/compliance/nist-sp-800-53-rev-5/si-19-de-identification) - [**Control SI-19(2)** — Archiving](https://support.icompaas.com/compliance/nist-sp-800-53-rev-5/si-19-2-archiving) ## References - [NIST Computer Security Resource Center — NIST SP 800-53 Rev. 5](https://csrc.nist.gov/Projects/risk-management/sp800-53-controls) - Catalogue identifier: `Control SI-19(6)` Topics: data protectionsecure developmentcode review testingdevsecopsprivacy management ## Related compliance guidance - [NIST SP 800-53 Rev. 5: a practical implementation guide for cloud teams](https://support.icompaas.com/compliance/nist-sp-800-53-rev-5): Start with the full NIST SP 800-53 implementation guide — scope, roadmap, evidence and how the assessment runs. - [NIST SP 800-171 and CMMC: a practical guide to protecting CUI in the cloud](https://support.icompaas.com/compliance/nist-sp-800-171-rev-3): If your obligation is protecting CUI in your own systems for a federal or defence contract, this derived subset — not the full catalogue — is the requirement. - [SOC 2 compliance: a practical implementation guide for cloud-native SaaS teams](https://support.icompaas.com/compliance/soc-2-trust-services-criteria): Most commercial SaaS already hold a SOC 2 Type 2, and FedRAMP 20x Class A is designed for providers that have one.