Researchers Use Lasers to Hack Smart Speakers

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University researchers have delivered unauthorized instructions to digital assistants like Alexa, Google Assistant, Facebook Portal and Siri utilizing laser beams. The microphones in units like sensible audio system, cell phones and tablets convert sound into electrical indicators, however what the researchers discovered was that the mics react to mild aimed immediately at them, too. “By modulating an electrical signal in the intensity of a light beam, attackers can trick microphones into producing electrical signals as if they are receiving genuine audio,” they wrote.



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