Check or Attack Name: Act as System Privilege

A user has been detected with Act as part of the operating system privileges. This right is not normally granted to any users, and can be used to attain administrative rights.

Verify Advanced user rights in User Manager.

To audit and revoke this privilege, follow these steps:

1. Open User Manager. From the Windows NT Start menu, select Programs, Administrative Tools (Common), User Manager.
2. From the Policies menu, select User Rights to display the User Rights Policy dialog box.
3. Select the Show Advanced User Rights check box.
4. From the Right list, select Act as part of the operating system.
5. Verify this right is set in accordance with your security policy.
To remove a user, select the user and click Remove.

Microsoft Knowledge Base Article Q101366, Definition and List of Windows NT Advanced User Rights, http://support.microsoft.com/support/kb/articles/q101/3/66.asp