Researchers from the Ben-Gurion University of the Negev and the Weizmann Institute of Science in Israel have been researching on sound waves as a means for eves dropping by studying the effect of these waves on objects and they successfully discovered a method of retrieving conversations through a simple light bulb from as far as 25 meters.
When we think of a privacy breach, it tends to come from android devices or hacked accounts or in some cases devices like Alexa or Google Home or Siri but these researchers don’t even need to plant a device much than implant a malware. They just need a clear vision of a bulb from less than 25 meters, bizarre isn’t it?
They called this method "Lamphone" – a side-channel attack for eavesdropping sound. But there are some major limitations; first, the need of a clear view of the bulb, if the bulb is even slightly obscured by a curtain or a lampshade- the method won’t work then the light bulb concerned should meet the requirements in the aspect of the thickness of glass or output of light and lastly, the quality of the sounds picked up will depend on the proximity of people to the bulb and loudness of their conversation.
How does it work?
Even with its drawbacks, there’s no doubt Lamphone is a genius method for spying conversations from afar. The researchers say they analyze the bulb’s frequency r ..
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