On February 22, 2016, the team released a YouTube video showing the hack in action.
Our method is unique in two respects: it is covert and fast.
Its very covert, actually, Guri said.
Later, the blinking can be recorded by a camera and deciphered.
The paper explained what a theoretical attack would look like once infection had taken place.
Eventually it starts transmitting the binary data through the blinking HDD LED using a selected encoding scheme.
A hidden video camera films the activity in the room, including the LED signals.
The attacker can then decode the signals and reconstruct the modulated data.
Our results show that it is feasible to use this optical channel to efficiently leak [data].
Its possible for the attacker to do such fast blinking that a human never sees it, Guri noted.
The researchers found they could read the signal from 20 meters away from outside a building.
That range could be even longer with an optical zoom lens.
Source:Wired
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source: www.techworm.net
