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AU-9(7) AU · Audit and Accountability

Store on Component with Different Operating System

LOW MODERATE HIGH
1 Overlay 4 Related Controls
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Requirements NIST SOURCE

Store audit information on a component running a different operating system than the system or component being audited.

Discussion (NIST Supplemental Guidance)

Storing auditing information on a system component running a different operating system reduces the risk of a vulnerability specific to the system, resulting in a compromise of the audit records.

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 AU-9(7) 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. audit information is stored on a component running a different operating system than the system or component being audited.

Examine

[SELECT FROM: Audit and accountability policy; system security plan; privacy plan; access control policy and procedures; procedures addressing protection of audit information; system design documentation; system configuration settings and associated documentation; system audit records; other relevant documents or records].

Interview

[SELECT FROM: Organizational personnel with audit and accountability responsibilities; organizational personnel with information security and privacy responsibilities; system/network administrators].

Test

[SELECT FROM: Mechanisms implementing operating system verification capability; mechanisms verifying audit information storage location].

Overlays

Showing the OT/ICS overlay for the parent control AU-9 — see the AU-9(7) 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

  • Base control: Included (matches standard baseline)

MODERATE

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

HIGH

  • Base control: Included (matches standard baseline)
  • Included: (2) (3) (4)

STIGs & CCIs

No STIG checks or CCI mappings are currently loaded for AU-9(7). 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

  • Audit and accountability policy
  • system security plan
  • privacy plan
  • access control policy and procedures

Configuration

  • system design documentation
  • system configuration settings and associated documentation

Testing

  • Mechanisms implementing operating system verification capability
  • mechanisms verifying audit information storage location

Other Records

  • procedures addressing protection of audit information
  • system audit records
  • other relevant documents or records