This policy setting allows you to audit events related to security system extensions or services such as the following: A security system extension, such as an authentication, notification, or security package is loaded and is registered with the Local Security Authority (LSA). It is used to authenticate logon attempts, submit logon requests, and any account or password changes. Examples of security system extensions are Kerberos and NTLM. A service is installed and registered with the Service Control Manager. The audit log contains information about the service name, binary, type, start type, and service account. If you configure this policy setting, an audit event is generated when an attempt is made to load a security system extension. Success audits record successful attempts and Failure audits record unsuccessful attempts. If you do not configure this policy setting, no audit event is generated when an attempt is made to load a security system extension. Volume: Low. Security system extension events are generated more often on a domain controller than on client computers or member servers. Default: No Auditing. 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. Fix: (1) GPO: Computer Configuration\Windows Settings\Security Settings\Advanced Audit Policy Configuration\Audit Policies\System\Audit Policy: System: Security System Extension (2) REG: NO REGISTRY INFO