My T3 also has encryption. When it locks out, it encrypts everything I tell it to. I believe I have it set on blowfish? If I enter the password wrong 3 times, it will reset the device to factory and erase everything on it. I've done it on accident...
Of subject, but on topic. This is an intersting tactic. I have considered it many times. But have never heard of it being used. Takes three strikes and your out to a new level. I've always felt this was a very good method of protection. With all the nice back up options around, this could actually prove good physical security on a machine.

The admin at my work place has a problem with people using the clock in computers to do all sorts of stuff that was supposed to be restricted. For example, change the screen saver and background. I don't know for sure how they were doing it, but I have an idea.

I pointed out that the machines had IE running. So either remove IE or block access to stuff like cmd, regedit, and notepad. He didn't follow so I showed him
%systemroot%\system32\cmd.exe via IE. Then open regedit, removed HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer no run value.

He suddenly realized his error. Good thing my admin is cool. I'd hate to be misunderstood by those whom I am trying to help. I also showed him how easy it is to create a *.reg file with notepad. Then a simple right click "merge".

I then pointed out that unless it is completly needed he should remove the ability for a user to access his bios. Then he should take the floppy and cd out of boot.

/highjack

Back to topic. I guess what I am saying is anything is a threat. It really just depends on what you wish to stop. What OS you choose to use, and whom you give rights to. Don't overlook all the simple stuff. OR as I once heard. K.I.S.S. "keep it simple stupid.


Be safe and stay free