# AU-12(4)_query-parameter-audits-of-personally-identifiable-informatio

> Provide and implement the capability for auditing the parameters of user query events for data sets containing personally identifiable information.

- Skill: `cyberstrikeus/au-12-4-query-parameter-audits-of-personally-identifiable-in` (Agent Skill)
- Install (CLI): `npx skillmds@latest add cyberstrikeus/au-12-4-query-parameter-audits-of-personally-identifiable-in`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cyberstrikeus/au-12-4-query-parameter-audits-of-personally-identifiable-in/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: cyberstrikeus (https://skillmd.com/u/cyberstrikeus)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/cyberstrikeus/au-12-4-query-parameter-audits-of-personally-identifiable-in

---


# AU-12(4) Query Parameter Audits of Personally Identifiable Information

> **Enhancement of:** AU-12

## High-Level Description

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

Query parameters are explicit criteria that an individual or automated system submits to a system to retrieve data. Auditing of query parameters for datasets that contain personally identifiable information augments the capability of an organization to track and understand the access, usage, or sharing of personally identifiable information by authorized personnel.

## What to Check

- [ ] Verify AU-12(4) Query Parameter Audits of Personally Identifiable Information is documented in SSP
- [ ] Confirm control is operating effectively
- [ ] Review evidence of continuous monitoring for AU-12(4)
- [ ] Verify enhancement builds upon base control AU-12

## How to Test

### Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for AU-12(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                            |
| --------------- | ---------------------------- | -------------------------------- |
| cloud-audit-mcp | Check logging configuration  | `cloud_audit_logging`            |
| AWS CLI         | Review CloudTrail/CloudWatch | `aws cloudtrail describe-trails` |

## Remediation Guide

### Control Statement

Provide and implement the capability for auditing the parameters of user query events for data sets containing personally identifiable information.

### Implementation Guidance

Query parameters are explicit criteria that an individual or automated system submits to a system to retrieve data. Auditing of query parameters for datasets that contain personally identifiable information augments the capability of an organization to track and understand the access, usage, or sharing of personally identifiable information by authorized personnel.

## Risk Assessment

| Finding                                                                                | Severity | Impact                              |
| -------------------------------------------------------------------------------------- | -------- | ----------------------------------- |
| AU-12(4) Query Parameter Audits of Personally Identifiable Information not implemented | Medium   | Audit and Accountability            |
| AU-12(4) partially implemented                                                         | Low      | Incomplete Audit and Accountability |

## CWE Categories

| CWE ID  | Title                |
| ------- | -------------------- |
| CWE-778 | Insufficient Logging |

## References

- [NIST SP 800-53 Rev 5 - AU-12(4)](https://csrc.nist.gov/projects/cprt/catalog#/cprt/framework/version/SP_800_53_5_1_1/home?element=au-12.4)
- [NIST SP 800-53A Rev 5 (Assessment Procedures)](https://csrc.nist.gov/pubs/sp/800/53/a/r5/final)
- [NIST SP 800-53 Rev 5 Full Catalog](https://csrc.nist.gov/pubs/sp/800/53/r5/upd1/final)

## Checklist

- [ ] Control documented in SSP
- [ ] Implementation evidence collected
- [ ] Operating effectiveness validated
- [ ] Continuous monitoring in place
- [ ] Related controls (none) reviewed