On Aug 18, 2007, at 9:26 AM, NoiseEHC wrote: > As I know there are LEDs indicating the camera/microphone activity. > Have you thought about that if a rogue program uses the camera for > 1/10 > second in every second then the LED will blink fast enough that the > user > will see it as it glows faint?
"Care was also taken to avoid hysteresis attacks: it is not possible to enable capture from the microphone or camera for such a short time that the LEDs do not noticeably light." -- page 9, http://cups.cs.cmu.edu/soups/2007/proceedings/ p132_krstic.pdf Mitch and I worked out the numbers at some point and concluded it wasn't a compelling attack due to device start/stop and driver overhead. Note that as Scott points out, the only time this is even a possible attack vector would be when the entire OS is compromised and Bitfrost disabled or overridden. -- Ivan Krstić <[EMAIL PROTECTED]> | http://radian.org _______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel
