ma-4-6-cryptographic-protection

name	MA-4(6)_cryptographic-protection
description	Implement the following cryptographic mechanisms to protect the integrity and confidentiality of nonlocal maintenance and diagnostic communications: [
category	configuration
version	5.2.0
author	cyberstrike-official
tags	["nist","sp800-53","rev5","ma-4-6","ma","enhancement"]
tech_stack	["linux","windows"]
cwe_ids	[]
chains_with	["SC-8","SC-12","SC-13"]
prerequisites	["MA-4"]
severity_boost	{"SC-8":"Chain with SC-8 for comprehensive security coverage","SC-12":"Chain with SC-12 for comprehensive security coverage","SC-13":"Chain with SC-13 for comprehensive security coverage"}

MA-4(6) Cryptographic Protection

Enhancement of: MA-4

High-Level Description

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

Failure to protect nonlocal maintenance and diagnostic communications can result in unauthorized individuals gaining access to organizational information. Unauthorized access during remote maintenance sessions can result in a variety of hostile actions, including malicious code insertion, unauthorized changes to system parameters, and exfiltration of organizational information. Such actions can result in the loss or degradation of mission or business capabilities.

What to Check

• Verify MA-4(6) Cryptographic Protection is documented in SSP
• Confirm control is operating effectively
• Review evidence of continuous monitoring for MA-4(6)
• Verify enhancement builds upon base control MA-4

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for MA-4(6) 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

Implement the following cryptographic mechanisms to protect the integrity and confidentiality of nonlocal maintenance and diagnostic communications: [organization-defined].

Implementation Guidance

Failure to protect nonlocal maintenance and diagnostic communications can result in unauthorized individuals gaining access to organizational information. Unauthorized access during remote maintenance sessions can result in a variety of hostile actions, including malicious code insertion, unauthorized changes to system parameters, and exfiltration of organizational information. Such actions can result in the loss or degradation of mission or business capabilities.