MA-5(3)_citizenship-requirements-for-classified-systems

DevOps & Security

Verify that personnel performing maintenance and diagnostic activities on a system processing, storing, or transmitting classified information are ...

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Source SKILL.md: https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/NIST/SP800-53_rev5/MA_maintenance/MA-5(3)_citizenship-requirements-for-classified-systems/SKILL.md

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MA-5(3) Citizenship Requirements for Classified Systems

Enhancement of: MA-5

High-Level Description

Family: Maintenance (MA) Framework: NIST SP 800-53 Rev 5

Personnel who conduct maintenance on organizational systems may be exposed to classified information during the course of their maintenance activities. If access to classified information on organizational systems is restricted to U.S. citizens, the same restriction is applied to personnel performing maintenance on those systems.

What to Check

Verify MA-5(3) Citizenship Requirements for Classified Systems is documented in SSP
Confirm control is operating effectively
Review evidence of continuous monitoring for MA-5(3)
Verify enhancement builds upon base control MA-5

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for MA-5(3) implementation details. Verify the organization has documented how this control is satisfied.

Step 2: Validate Implementation

# For cloud environments, use cloud-audit-mcp tools
# For on-premises, review system configurations directly

# Example: Check if account management policies exist
grep -r "account.management\|access.control" /etc/security/ 2>/dev/null

Step 3: Test Operating Effectiveness

Verify the control is actively functioning, not just documented. Check logs, configurations, and operational evidence.

Tools

Tool	Purpose	Usage
Manual Review	Documentation and interview-based	N/A

Remediation Guide

Control Statement

Verify that personnel performing maintenance and diagnostic activities on a system processing, storing, or transmitting classified information are U.S. citizens.

Implementation Guidance

Risk Assessment

Finding	Severity	Impact
MA-5(3) Citizenship Requirements for Classified Systems not implemented	Medium	Maintenance
MA-5(3) partially implemented	Low	Incomplete Maintenance

CWE Categories

CWE ID	Title
N/A	No direct CWE mapping

References

Checklist

Control documented in SSP
Implementation evidence collected
Operating effectiveness validated
Continuous monitoring in place
Related controls (PS-3) reviewed