AU-16_cross-organizational-audit-logging
DevOps & SecurityAU-16_cross-organizational-audit-logging is an Agent Skill for devops & security published in the CyberStrikeus/CyberStrike repository on GitHub: a SKILL.md instruction file an AI agent can load to do this task.
Employ [organization-defined] for coordinating [organization-defined] among external organizations when audit information is transmitted across organi
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Inspect the Agent Skill at https://github.com/CyberStrikeus/CyberStrike/blob/HEAD/.cyberstrike/skill/NIST/SP800-53_rev5/AU_audit-and-accountability/AU-16_cross-organizational-audit-logging/SKILL.md and all supporting files. Report provenance, permissions, scripts, dependencies, and security risks. Propose an exact installation into .agents/skills/au-16-cross-organizational-audit-logging, but wait for my approval before writing files or running scripts.
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AU-16 Cross-organizational Audit Logging
High-Level Description
Family: Audit and Accountability (AU) Framework: NIST SP 800-53 Rev 5
When organizations use systems or services of external organizations, the audit logging capability necessitates a coordinated, cross-organization approach. For example, maintaining the identity of individuals who request specific services across organizational boundaries may often be difficult, and doing so may prove to have significant performance and privacy ramifications. Therefore, it is often the case that cross-organizational audit logging simply captures the identity of individuals who issue requests at the initial system, and subsequent systems record that the requests originated from authorized individuals. Organizations consider including processes for coordinating audit information requirements and protection of audit information in information exchange agreements.
What to Check
- Verify AU-16 Cross-organizational Audit Logging is documented in SSP
- Confirm control is operating effectively
- Review evidence of continuous monitoring for AU-16
How to Test
Step 1: Review Documentation
Examine the System Security Plan (SSP) and related artifacts for AU-16 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
Employ [organization-defined] for coordinating [organization-defined] among external organizations when audit information is transmitted across organizational boundaries.
Implementation Guidance
When organizations use systems or services of external organizations, the audit logging capability necessitates a coordinated, cross-organization approach. For example, maintaining the identity of individuals who request specific services across organizational boundaries may often be difficult, and doing so may prove to have significant performance and privacy ramifications. Therefore, it is often the case that cross-organizational audit logging simply captures the identity of individuals who issue requests at the initial system, and subsequent systems record that the requests originated from authorized individuals. Organizations consider including processes for coordinating audit information requirements and protection of audit information in information exchange agreements.
Risk Assessment
| Finding | Severity | Impact |
|---|---|---|
| AU-16 Cross-organizational Audit Logging not implemented | Medium | Audit and Accountability |
| AU-16 partially implemented | Low | Incomplete Audit and Accountability |
CWE Categories
| CWE ID | Title |
|---|---|
| CWE-778 | Insufficient Logging |
References
- NIST SP 800-53 Rev 5 - AU-16
- NIST SP 800-53A Rev 5 (Assessment Procedures)
- NIST SP 800-53 Rev 5 Full Catalog
Checklist
- Control documented in SSP
- Implementation evidence collected
- Operating effectiveness validated
- Continuous monitoring in place
- Related controls (AU-3, AU-6, AU-7, CA-3, PT-7) reviewed