Having Secure logon provides an additional layer of security for your computer and ensuring that authentic Windows logon screen appears. It protects the system from programs (such as a virus or spyware) that mimic a logon to retrieve the password information.
It is a common security feature of office computers on a domain network which guarantees an authentic login prompt.
It's important to make the feature enabled for security reasons. One way to do this is to enable secure logon, which requires you to press Ctrl+Alt+Delete to log on.
How to Activate the security feature Secure Logon in Windows 8 and 7
- Type netplwiz in the Run window (Win+R) or use “control userpasswords2”
- Click "Continue" button for UAC prompt and go to Advanced tab.
- Select the Require users to press Ctrl+Alt+Delete check box.