Wrong. http://en.wikipedia.org/wiki/Control-Alt-Delete http://www.techshowflorida.com/details.html
Invented LONG before phishing. I fail to see how a USB dongle can determine if a user is local or not. And yes, you can send a ctl+alt+delete remotely, but it will disconnect your session as the computer reboots. Also, Linux and Windows can be altered to not respond to remote ctl+alt+delete.
-----Original Message----- From: Luke -Jr Sent: Wednesday, February 21, 2007 11:27 AM
Actually, IIRC, the Ctrl-Alt-Delete login process is meant to thwart phishing attacks. When you press Ctrl-Alt-Delete, Windows ALWAYS intercepts it. Therefore, you know Windows itself is presenting your login dialog, not some viral program. You can send Ctrl-Alt-Delete remotely since at least Win98 (though in DOS-based Windows, it will freeze any network processes).
If you want to determine if a user is local, use a USB dongle :)