au-13-monitoring-for-information-disclosure

name	AU-13_monitoring-for-information-disclosure
description	Monitor [organization-defined] [organization-defined] for evidence of unauthorized disclosure of organizational information;
category	information-gathering
version	5.2.0
author	cyberstrike-official
tags	["nist","sp800-53","rev5","au-13","au"]
tech_stack	["aws","azure","gcp","linux","windows"]
cwe_ids	["CWE-778"]
chains_with	["AC-22","PE-3","PM-12","RA-5","SC-7","SI-20"]
prerequisites	[]
severity_boost	{"AC-22":"Chain with AC-22 for comprehensive security coverage","PE-3":"Chain with PE-3 for comprehensive security coverage","PM-12":"Chain with PM-12 for comprehensive security coverage"}

AU-13 Monitoring for Information Disclosure

High-Level Description

Family: Audit and Accountability (AU) Framework: NIST SP 800-53 Rev 5

Unauthorized disclosure of information is a form of data leakage. Open-source information includes social networking sites and code-sharing platforms and repositories. Examples of organizational information include personally identifiable information retained by the organization or proprietary information generated by the organization.

What to Check

• Verify AU-13 Monitoring for Information Disclosure is documented in SSP
• Validate all 3 control requirements are implemented
• Confirm control is operating effectively
• Review evidence of continuous monitoring for AU-13

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for AU-13 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
cloud-audit-mcp	Check logging configuration	cloud_audit_logging
AWS CLI	Review CloudTrail/CloudWatch	aws cloudtrail describe-trails

Remediation Guide

Control Statement

Monitor [organization-defined] [organization-defined] for evidence of unauthorized disclosure of organizational information; and If an information disclosure is discovered: Notify [organization-defined] ; and Take the following additional actions: [organization-defined].

Implementation Guidance

Unauthorized disclosure of information is a form of data leakage. Open-source information includes social networking sites and code-sharing platforms and repositories. Examples of organizational information include personally identifiable information retained by the organization or proprietary information generated by the organization.