Getting pissed off and screaming at your computer still shown to have no effect.
Using the microphones and speakers that come standard in many of today’s laptop computers and mobile devices, hackers can secretly transmit and receive data using high-frequency audio signals that are mostly inaudible to human ears, a new study shows.
Michael Hanspach and Michael Goetz, researchers at Germany’s Fraunhofer Institute for Communication, Information Processing, and Ergonomics, recently performed a proof-of-concept experiment that showed that “covert acoustical networking,” a technique which had been hypothesized but considered improbable by most experts, is indeed possible.
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