This sensor, often used to adjust screen brightness based on ambient light, has proven vulnerable to hacking.
MIT researchers showed how attackers can use algorithms to interpret lighting changes caused by user movements, such as swiping the screen or interacting with a video.
This discovery raises questions about security and privacy because most applications do not require user permission to access the light sensor.
Thus, even if the smartphone’s camera is turned off, the light sensor can silently collect information about the user’s actions. We will wait for a solution to the problem from the largest IT companies.
Source: Ferra
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