Requiring CTRL + ALT + DEL to be Pressed Before Login

 It is possible to force users to press the CTRL + ALT + DEL keys before the login authentication process begins on a windows system. This additional security feature can be enabled by following th undermentioned steps 

1. Open regedit.exe.file

2. Search for HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\WindowsNT\CurrentVersion\Winlogon

3. Create a new DWORD entry called DisableCAD and modify its data value to '0' to requrie 

    CTRL+ALT+DEL keys to be pressed and to '1' to disable this feature.

4.Exit the windows registry and restart the windows session for the changes to be applied

For Windows 2000 and XP
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Hint: Use the above details carefully.