* Bob Beck wrote: > > > And guess what. Keyboards use a serial protocol. Which means that > > > there will be slightly different voltage drops in the system varying > > > with the keys you press. ZOMG! OpenBSD provides a side channel for > > > attackers through the sensors framework! > > > > And don't forget the aps(4) sensor on Thinkpads! The accelerometer can > > probably measure the acceleration caused by various key strokes and that > > acceleration will be different depending on where on the keyboard you hit > > (different angles) and with which finger (different strength). > > well, and dont' forget the physical attack angle. Between the screen > leakage perhaps being used to detect a large number of pink pixels and > the aps(4) sensor leakage could probably detect the rythmic thumping > when the laptop owner is doing some one handed laptop driving when the > other hand is occupied. An attacker could use this information to then > physically take control of the machine while the operator has both > hands busy and is vulnerable!
I just unplugged all my keyboards.
