Yeah and Linux is waaay behind in other areas. Windows had a secure attention sequence (ctrl-alt-del to login) for several decades now. Linux still doesn't.
Please check the relates wikipedia article. Updated to reflect recent secure attention key in the linux world: https://en.wikipedia.org/wiki/Secure_attention_key
Well, there is: https://en.wikipedia.org/wiki/Magic_SysRq_key
Is that something Linux needs? I don’t really understand the benefit of it.
[dead]
Linux (well, more accurately, X11), has had a SAK for ages now, in the form of the CTRL+ALT+BACKSPACE that immediately kills X11, booting you back to the login screen.
I personally doubt SAK/SAS is a good security measure anyways. If you've got untrusted programs running on your machine, you're probably already pwn'd.