News for hackers. Stuff that matters.

A comment on Malware can turn off webcam LED and record video, demonstrated on ThinkPad X230. Parent comment

Re:Malware can turn off webcam LED and record video, demonst... by axoltl on Wednesday November 27, 2024 @06:10PM (#42260727)
I was not very popular with the camera firmware folks for a while. They had to re-architect a bunch of things as they used to occasionally power on the camera logic without powering the sensor array to get information out of the built-in OTP. Because the LED now came on whenever the camera was powered they had to defer all that logic.
[ Parent | on HN ]
Re:Malware can turn off webcam LED and record video, demonst... by ProfessorLayton on Wednesday November 27, 2024 @06:23PM (#42260816)
What does OTP stand for in this case? The camera PROM??
[ Parent | on HN ]
Re:Malware can turn off webcam LED and record video, demonst... by axoltl on Wednesday November 27, 2024 @06:50PM (#42261012)
Apologies. OTP is One-Time-Programmable. The physical implementation of this varies, in this specific case it was efuses (anti-fuse, actually). It's used for things like calibration data. For a camera it contains information about the sensor (dead pixels, color correction curves, etc.).
[ Parent | on HN ]