Re: But wait...
Yes, the victim must be compromised after that the data can be transferred in various ways...
In this case, they used heat to send data via the victim's temperature sensors. You could also use all sorts of other methods.
A BT keybopard for instance.... If the host was to disconnect/reconnect a BT keyboard and the victim was listening for traffic - that would work as would pretty much any form of sensor.
Even LEDs can be used as sensors. A little known thing about LEDs is that they are also light sensitive and LEDs driven by microcontrollers can also be used as light receivers.
But, hey, once you've compromised a compter, just assume all bets are off.
Biting the hand that feeds IT
