PE-3(4)_lockable-casings

DevOps & Security

Use lockable physical casings to protect [organization-defined] from unauthorized physical access.

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Source SKILL.md: https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/NIST/SP800-53_rev5/PE_physical-and-environmental-protection/PE-3(4)_lockable-casings/SKILL.md

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PE-3(4) Lockable Casings

Enhancement of: PE-3

High-Level Description

Family: Physical and Environmental Protection (PE) Framework: NIST SP 800-53 Rev 5

The greatest risk from the use of portable devices—such as smart phones, tablets, and notebook computers—is theft. Organizations can employ lockable, physical casings to reduce or eliminate the risk of equipment theft. Such casings come in a variety of sizes, from units that protect a single notebook computer to full cabinets that can protect multiple servers, computers, and peripherals. Lockable physical casings can be used in conjunction with cable locks or lockdown plates to prevent the theft of the locked casing containing the computer equipment.

What to Check

Verify PE-3(4) Lockable Casings is documented in SSP
Confirm control is operating effectively
Review evidence of continuous monitoring for PE-3(4)
Verify enhancement builds upon base control PE-3

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for PE-3(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

Use lockable physical casings to protect [organization-defined] from unauthorized physical access.

Implementation Guidance

Risk Assessment

Finding	Severity	Impact
PE-3(4) Lockable Casings not implemented	Medium	Physical and Environmental Protection
PE-3(4) partially implemented	Low	Incomplete Physical and Environmental Protection

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 (none) reviewed