Cybersecurity researchers of Ben-Gurion University and Weizmann Institute of Science in Israel have developed a hacking technique called ‘Lamphone Attack’ which can be used to take control of a ” dumb light bulb” to listen to the conversation happening around. The attack uses a remote electro-optical sensor to analyse a light bulb’s frequency response to sound, which can be easily recovered as human voice by the Google Cloud Speech API.

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