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Hackers Can Steal Data By Tweaking Monitor’s Brightness By Just 3%

Hackers Can Steal Data By Tweaking Monitor’s Brightness By Just 3%

As weird and creepy as it may sound, researchers have invented a technique to steal your data by tweaking the brightness of your PC’s monitor by merely 3%.

In a paper published by the researchers from the Ben-Gurion University of the Negrev, Isreal has demonstrated how Air-gapped computers can be exploited to retrieve data by simply meddling with the brightness of the monitor by a percentage that will usually go unnoticed.

Air-gapped computers are workstations that are kept isolated from the internet and other internet-connected computers to safeguard the data stored in them.

The researchers introduced an optical covert channel through which the sensitive data is concealed on the LCD screen brightness in a covert way, which is invisible to users. The technique works even when the person is using the PC.

The attack model consists of the following stages:

In the first stage, researchers contaminated the target network by