NIST SP 800-53 Rev. 5 SI-12(3) — Information Disposal

What this control requires

Dispose of, destroy, or erase information after the retention period using defined techniques. Proper disposal minimizes security and privacy risks, ensuring that both original and copied records, including system logs with PII, are securely eliminated. This control supports the Data Retention Policy, Privacy Protection capability within the System and Information Integrity family.

In plain English

Dispose of, destroy, or erase information after the retention period using defined techniques. 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 System and Information Integrity, the assessor will trace your implementation back to the catalogue reference (Control SI-12(3)) 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.
• Security. Document the trigger, the owner and the cadence.
• Data. Document the trigger, the owner and the cadence.
• Protection. Document the trigger, the owner and the cadence.
• Scope: management, information, privacy, system, records, protection, retention, capability.

Evidence to collect

• Policy Document. A signed and version-controlled policy / standard / procedure document.

Signed policy or standard documents the safeguard. Focus: Information Disposal.

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.

• SOC 2 (2017 TSC) P2.1 — Communication of Data Subject Choices and Consequences
• HIPAA (45 CFR Part 164) 164.312(e)(2)(i) — Transmission Security - Integrity Controls
• NIST SP 800-171 Rev. 3 3.15.1 — Policy and Procedures
• ISO/IEC 27001:2022 A.5.1 — Policies for information security

Related controls in NIST SP 800-53 Rev. 5

• Control SI-19(2) — Archiving
• Control SI-12 — Information Management And Retention
• Control SI-19(7) — Validated Algorithms And Software
• Control AC-16 — Security And Privacy Attributes
• Control SI-18(1) — Automation Support
• Control SI-19 — De-Identification

References

• NIST Computer Security Resource Center — NIST SP 800-53 Rev. 5
• Catalogue identifier: Control SI-12(3)

Topics: governance riskdata protectionprivacy managementlogging retentionpolicy management