Computers Can Be Hacked Using High-Pitched Sound That You Can’t Hear

800px-Sine_waves_different_frequencies.svgGetting pissed off and screaming at your computer still shown to have no effect.

Via Scientific American:

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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  • echar

    This makes me think of Van Eck phreaking.

  • jasonpaulhayes

    That’s just as concerning as it is fascinating and on that note… Adults hear a narrower range of frequencies than young people because they lose fine hairs on the inner ear with age. When I was young I could hear high pitch sound from most televisions and identify (while not playing any sound, smart ass) it’s exact location at a fair distance. Also, when I was just an infant I had a vocal range that would often disconnect telephone calls and disrupt other electronics.

  • llewellynh

    Run out and get a dog!