Ambient light sensors are used by phones to detect surrounding light levels and adjust brightness accordingly, if it’s on an auto-adjust setting.

There's a dark side to ambient light sensors that you may not realize, and some researchers have found a novel way to exploit this component.

Researchers discover a way to use a device's ambient light sensor to steal potentially sensitive browser data.

Ambient light sensors can reveal your device activity. How big a threat is it? For now, there's no reason for concern, but that could change in coming years.