"Computers with particular Intel® Core™ vPro™ processors enjoy the benefit of a VNC-compatible Server embedded directly onto the chip, enabling permanent remote access and control."

http://www.realvnc.com/products/viewerplus/

Because if it is true, then your CPU is a potential backdoor given that they have a masterkey or masterpassword.

And I really don't understand how this can work when the computer is turned off, any ideas??