My understanding of the
DEL keyboard combination is that it is "hard wired" into the bios and triggers an interrupt which historically caused the PC to reboot but in Windows was used to trigger the Secure Attention Sequence (SAS).
This seems like a pretty good idea as I can be certain that I am only entering my password into Windows and not into a malicious application that only looks like a Windows login.
I notice since I upgraded from Windows 7 to Windows 10 that I no longer have to press
DEL to log in.
I guess this is something to do with Windows 10 having to work on a range of devices which may not display a full keyboard at the point of login, or not have a keyboard combination that triggers an interrupt.
However, why did Microsoft make this choice (turning off SAS by default) for desktop type machines which have a physical keyboard?
I'm aware I can turn it back on in the bios but don't understand why its not the default on my desktop.