← MA-4
MA-4(1) MA · Maintenance

Logging and Review

LOW MODERATE HIGH
1 Overlay 2 Related Controls
Graph
Export ▾

Requirements NIST SOURCE

Discussion (NIST Supplemental Guidance)

Audit logging for nonlocal maintenance is enforced by AU-2 . Audit events are defined in AU-2a.

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 MA-4(1) 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 events to be logged for nonlocal maintenance are defined;
  2. audit events to be logged for diagnostic sessions are defined;
  3. <MA-04(01)_ODP[01] audit events> are logged for nonlocal maintenance sessions;
  4. <MA-04(01)_ODP[02] audit events> are logged for nonlocal diagnostic sessions;
  5. the audit records of the maintenance sessions are reviewed to detect anomalous behavior;
  6. the audit records of the diagnostic sessions are reviewed to detect anomalous behavior.

Examine

[SELECT FROM: Maintenance policy; procedures addressing nonlocal system maintenance; list of audit events; system configuration settings and associated documentation; maintenance records; diagnostic records; audit records; reviews of maintenance and diagnostic session records; system security plan; other relevant documents or records].

Interview

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

Test

[SELECT FROM: Organizational processes for audit and review of nonlocal maintenance; mechanisms supporting and/or implementing audit and review of nonlocal maintenance].

Overlays

Showing the OT/ICS overlay for the parent control MA-4 — see the MA-4(1) 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)
  • Added: (1)

HIGH

  • Base control: Included (matches standard baseline)
  • Included: (3)
  • Added: (1)

STIGs & CCIs

No STIG checks or CCI mappings are currently loaded for MA-4(1). 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

  • Maintenance policy
  • system security plan

Configuration

  • system configuration settings and associated documentation

Testing

  • Organizational processes for audit and review of nonlocal maintenance
  • mechanisms supporting and/or implementing audit and review of nonlocal maintenance

Other Records

  • procedures addressing nonlocal system maintenance
  • list of audit events
  • maintenance records
  • diagnostic records
  • audit records
  • reviews of maintenance and diagnostic session records
  • other relevant documents or records