Ensure No Auditing for 'Audit Policy: Policy Change: Authentication Policy Change' This subcategory reports changes in authentication policy. Events for this subcategory include: - 4706: A new trust was created to a domain. - 4707: A trust to a domain was removed. - 4713: Kerberos policy was changed. - 4716: Trusted domain information was modified. - 4717: System security access was granted to an account. - 4718: System security access was removed from an account. - 4739: Domain Policy was changed. - 4864: A namespace collision was detected. - 4865: A trusted forest information entry was added. - 4866: A trusted forest information entry was removed. - 4867: A trusted forest information entry was modified. Refer to the Microsoft Knowledgebase article "Description of security events in Windows Vista and in Windows Server 2008" for the most recent information about this setting: http://support.microsoft.com/kb/947226. Counter Measure: Enable Audit policy settings that support the organizational security policy for all the computers in your organization. Identify the components that you need for an audit policy that enables your organization to hold users accountable for their actions while using organizational resources and enables IT departments to detect unauthorized activity efficiently and then track those events in log files. Potential Impact: If no audit settings are configured, or if audit settings are too lax on the computers in your organization, security incidents might not be detected or not enough evidence will be available for network forensic analysis after security incidents occur. However, if audit settings are too severe, critically important entries in the Security log may be obscured by all of the meaningless entries and computer performance and the available amount of data storage may be seriously affected. Companies that operate in certain regulated industries may have legal obligations to log certain events or activities.

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(1) GPO: Computer ConfigurationWindows SettingsSecurity SettingsAdvanced Audit Policy ConfigurationAudit PoliciesPolicy ChangeAudit Policy: Policy Change: Authentication Policy Change