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AC-4(25) AC · Access Control

Data Sanitization

LOW MODERATE HIGH
1 Overlay 1 Related Control
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Requirements NIST SOURCE

When transferring information between different security domains, sanitize data to minimize [one of: delivery of malicious content, command and control of malicious code, malicious code augmentation, and steganography-encoded data; spillage of sensitive information] in accordance with [policy].

Discussion (NIST Supplemental Guidance)

Data sanitization is the process of irreversibly removing or destroying data stored on a memory device (e.g., hard drives, flash memory/solid state drives, mobile devices, CDs, and DVDs) or in hard copy form.

Implementation Guidance

Engineering Interpretation

Original engineering commentary written for this explorer — not NIST source text and not authoritative guidance.

No engineering interpretation has been authored for AC-4(25) yet. This section is architected to receive it — see the Requirements and Assessment sections above for the authoritative NIST source content in the meantime.

Assessment

NIST SP 800-53A REV 5.2.0

Assessment Objectives

  1. one or more of the following PARAMETER VALUES is/are selected: {delivery of malicious content, command and control of malicious code, malicious code augmentation, and steganography-encoded data; spillage of sensitive information};
  2. policy for sanitizing data is defined;
  3. when transferring information between different security domains, data is sanitized to minimize <AC-04(25)_ODP[01] SELECTED PARAMETER VALUES> in accordance with <AC-04(25)_ODP[02] policy>.

Examine

[SELECT FROM: Information flow enforcement policy; procedures addressing information flow enforcement; system design documentation; system configuration settings and associated documentation; system audit records; system security plan; other relevant documents or records].

Interview

[SELECT FROM: Organizational personnel with information flow enforcement responsibilities; system/network administrators; organizational personnel with information security responsibilities].

Test

[SELECT FROM: Mechanisms implementing information flow enforcement functions].

Overlays

Showing the OT/ICS overlay for the parent control AC-4 — see the AC-4(25) entries within each baseline below.

OT/ICS Overlay SP 800-82r3

NIST SP 800-82r3 Appendix F, Table 22. Blank baseline means the control/control enhancement is not selected in that initial OT baseline.

LOW

Not applicable at this tier.

MODERATE

  • Base control: Included (matches standard baseline)

HIGH

  • Base control: Included (matches standard baseline)
  • Included: (4)

STIGs & CCIs

No STIG checks or CCI mappings are currently loaded for AC-4(25). This section is architected to display, per product: STIG ID, Finding ID, Severity, Title, Description, Check, Fix, CCI, and NIST control mapping — but nothing is populated here until a real DISA STIG/CCI dataset is ingested.

Learn more about STIG/CCI integration →

Evidence

Potential Evidence — Derived

Categorized from the SP 800-53A "Examine"/"Test" artifact list above by keyword — not an authoritative NIST evidence list.

Policy

  • Information flow enforcement policy
  • system security plan

Configuration

  • system design documentation
  • system configuration settings and associated documentation

Testing

  • Mechanisms implementing information flow enforcement functions

Other Records

  • procedures addressing information flow enforcement
  • system audit records
  • other relevant documents or records