Microsoft Windows Security - Use Group Policy To Rename The Administrator Account
It's a best security practice to rename the built-in administrator and guest accounts. Did you know you can use Microsoft Windows Server 2003 Group Policy to rename them? First, you'll need to create a Group Policy Object (GPO). Next, edit the GPO's properties: In the GPO Editor, expand the Computer Configuration node, then Windows Settings, then Security Settings, then Local Policies, and then select Security Options. In the right pane, double–click on Accounts: Rename Administrator Account. Select the Define This Policy Setting check box and enter the new name for the account. Then, click OK. You can do the same with the Accounts: Rename Guest Account item.