← MA-3
MA-3(1) MA · Maintenance

Inspect Tools

LOW ✓ MODERATE ✓ HIGH
1 Overlay 1 Related Control
Graph
Export ▾

Requirements NIST SOURCE

Inspect the maintenance tools used by maintenance personnel for improper or unauthorized modifications.

Discussion (NIST Supplemental Guidance)

Maintenance tools can be directly brought into a facility by maintenance personnel or downloaded from a vendor’s website. If, upon inspection of the maintenance tools, organizations determine that the tools have been modified in an improper manner or the tools contain malicious code, the incident is handled consistent with organizational policies and procedures for incident handling.

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-3(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. maintenance tools used by maintenance personnel are inspected for improper or unauthorized modifications.

Examine

[SELECT FROM: Maintenance policy; procedures addressing system maintenance tools; system maintenance tools and associated documentation; maintenance tool inspection records; maintenance records; system security plan; other relevant documents or records].

Interview

[SELECT FROM: Organizational personnel with system maintenance responsibilities; organizational personnel with information security responsibilities].

Test

[SELECT FROM: Organizational processes for inspecting maintenance tools; mechanisms supporting and/or implementing the inspection of maintenance tools].

Overlays

Showing the OT/ICS overlay for the parent control MA-3 — see the MA-3(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

Not applicable at this tier.

MODERATE

  • Base control: Included (matches standard baseline)
  • Included: (1) (2) (3)

HIGH

  • Base control: Included (matches standard baseline)
  • Included: (1) (2) (3)

STIGs & CCIs

No STIG checks or CCI mappings are currently loaded for MA-3(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

Testing

  • Organizational processes for inspecting maintenance tools
  • mechanisms supporting and/or implementing the inspection of maintenance tools

Other Records

  • procedures addressing system maintenance tools
  • system maintenance tools and associated documentation
  • maintenance tool inspection records
  • maintenance records
  • other relevant documents or records