I'm looking for a way on Windows 7 (without using third party software) to set a custom execution command on Ctrl + Alt + Del and – obviously – disable the menu that opens when pressing those 3 keys.
I am not looking for a way to open the Task Manager directly, and I want to keep the regular functions of the 3 individual keys the same as well.
Best Answer
You would have to write a driver that goes into the OS, to change it's behavior, and it would be unsupported. C-A-D is the "secure attention" key -- that MS says, "guarantees" you are talking to the real password/login screen, since anything else can be intercepted or faked. The implication is that C-A-D cannot be intercepted or faked through any supported mechanism.
I'd bet it is also the case, that if you came up with something that allowed intercepting CAD, MS, would likely regard it as a security flaw and issue a patch to prevent your method from working.