PS-3_personnel-screening

DevOps & Security

Screen individuals prior to authorizing access to the system;

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How to use this skill

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Prompt to paste

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Source SKILL.md: https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/NIST/SP800-53_rev5/PS_personnel-security/PS-3_personnel-screening/SKILL.md

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First, summarize what it does, its dependencies, license status if identifiable, and any risks. Show the exact files you propose to add under .agents/skills/ps-3-personnel-screening/. Do not write files or run scripts until I approve.

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Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

PS-3 Personnel Screening

High-Level Description

Family: Personnel Security (PS) Framework: NIST SP 800-53 Rev 5

Personnel screening and rescreening activities reflect applicable laws, executive orders, directives, regulations, policies, standards, guidelines, and specific criteria established for the risk designations of assigned positions. Examples of personnel screening include background investigations and agency checks. Organizations may define different rescreening conditions and frequencies for personnel accessing systems based on types of information processed, stored, or transmitted by the systems.

What to Check

Verify PS-3 Personnel Screening is documented in SSP
Validate all 2 control requirements are implemented
Confirm control is operating effectively
Review evidence of continuous monitoring for PS-3

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for PS-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

Screen individuals prior to authorizing access to the system; and Rescreen individuals in accordance with [organization-defined].

Implementation Guidance

Risk Assessment

Finding	Severity	Impact
PS-3 Personnel Screening not implemented	Medium	Personnel Security
PS-3 partially implemented	Low	Incomplete Personnel Security

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 (AC-2, IA-4, MA-5, PE-2, PM-12) reviewed