# MA-5(4)_foreign-nationals

> Ensure that: Foreign nationals with appropriate security clearances are used to conduct maintenance and diagnostic activities on classified systems on

- Skill: `cyberstrikeus/ma-5-4-foreign-nationals` (Agent Skill)
- Install (CLI): `npx skillmds@latest add cyberstrikeus/ma-5-4-foreign-nationals`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cyberstrikeus/ma-5-4-foreign-nationals/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Security
- Author: cyberstrikeus (https://skillmd.com/u/cyberstrikeus)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/cyberstrikeus/ma-5-4-foreign-nationals

---


# MA-5(4) Foreign Nationals

> **Enhancement of:** MA-5

## High-Level Description

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

Personnel who conduct maintenance and diagnostic activities on organizational systems may be exposed to classified information. If non-U.S. citizens are permitted to perform maintenance and diagnostics activities on classified systems, then additional vetting is required to ensure agreements and restrictions are not being violated.

## What to Check

- [ ] Verify MA-5(4) Foreign Nationals is documented in SSP
- [ ] Validate all 2 control requirements are implemented
- [ ] Confirm control is operating effectively
- [ ] Review evidence of continuous monitoring for MA-5(4)
- [ ] 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(4) 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

Ensure that:
Foreign nationals with appropriate security clearances are used to conduct maintenance and diagnostic activities on classified systems only when the systems are jointly owned and operated by the United States and foreign allied governments, or owned and operated solely by foreign allied governments; and
Approvals, consents, and detailed operational conditions regarding the use of foreign nationals to conduct maintenance and diagnostic activities on classified systems are fully documented within Memoranda of Agreements.

### Implementation Guidance

Personnel who conduct maintenance and diagnostic activities on organizational systems may be exposed to classified information. If non-U.S. citizens are permitted to perform maintenance and diagnostics activities on classified systems, then additional vetting is required to ensure agreements and restrictions are not being violated.

## Risk Assessment

| Finding                                   | Severity | Impact                 |
| ----------------------------------------- | -------- | ---------------------- |
| MA-5(4) Foreign Nationals not implemented | Medium   | Maintenance            |
| MA-5(4) partially implemented             | Low      | Incomplete Maintenance |

## CWE Categories

| CWE ID | Title                 |
| ------ | --------------------- |
| N/A    | No direct CWE mapping |

## References

- [NIST SP 800-53 Rev 5 - MA-5(4)](https://csrc.nist.gov/projects/cprt/catalog#/cprt/framework/version/SP_800_53_5_1_1/home?element=ma-5.4)
- [NIST SP 800-53A Rev 5 (Assessment Procedures)](https://csrc.nist.gov/pubs/sp/800/53/a/r5/final)
- [NIST SP 800-53 Rev 5 Full Catalog](https://csrc.nist.gov/pubs/sp/800/53/r5/upd1/final)

## Checklist

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