Turning off camera LEDs and recording video is an old hack and old news. This is for a specific firmware and computer model and attack surface via USB to update the webcam's firmware, so I am assuming that makes it news?
EDIT: I keep a piece of black electric tape over any of my notebook's webcams.
> Turning off camera LEDs and recording video is an old hack and old news.
This.
Some of the linux webcam drivers drivers have had the option to specify the behavior of the LED via a parameter since way back, including turning it completely off.
EDIT: I keep a piece of black electric tape over any of my notebook's webcams.