---
name: framework-financial-services-controls-au-9
title: AU-9 - Protection of Audit Information
description: Protect audit information and audit logging tools from unauthorized access, modification, and deletion.
last-updated: 2026-08-26
---

> ## Documentation Index
> The table of contents for this documentation set is at https://cloud.ibm.com/docs/framework-financial-services-controls?format=markdown
> The index for all IBM Cloud docs is at: https://cloud.ibm.com/docs/llms.txt
> Use these files to discover more information as needed.

# AU-9 - Protection of Audit Information
{: #au-9}

## Control requirements
{: #control-requirements}



### AU-9 (a)
{: #au-9-a}


Protect audit information and audit logging tools from unauthorized access, modification, and deletion.


### AU-9 (b)
{: #au-9-b}


Alert _[Assignment: organization-defined personnel or roles]_ upon detection of unauthorized access, modification, or deletion of audit information.












## NIST supplemental guidance
{: #nist-supplemental-guidance}

Audit information includes all information needed to successfully audit system activity, such as audit records, audit log settings, audit reports, and personally identifiable information. Audit logging tools are those programs and devices used to conduct system audit and logging activities. Protection of audit information focuses on technical protection and limits the ability to access and execute audit logging tools to authorized individuals. Physical protection of audit information is addressed by both media protection controls and physical and environmental protection controls.