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Lamphone attack lets threat actors recover conversations from your light bulb.

The technique relies on recording light bulb emission variations caused by sound waves (speech) and then converting the light variations back into sound

Lamphone was tested from a distance of 25 meters, but could work from farther, with the proper equipment (laptop, telescope, and electro-optical sensor).

Works in real-time, too. More here: nassiben.com/lamphone

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