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U.S. researchers show computers can be hijacked to send data as sound waves

A team of security researchers has demonstrated the ability to hijack standard equipment inside computers, printers and millions of other devices in order to send information out of an office through sound waves.

The attack program takes control of the physical prongs on general-purpose input/output circuits and vibrates them at a frequency of the researchers’ choosing, which can be audible or not. The vibrations can be picked up with an AM radio antenna a short distance away.

For decades, spy agencies and researchers have sought arcane ways of extracting information from keyboards and the like, successfully capturing light, heat and other emanations that allow the receivers to reconstruct content. More...

08-05-2015 16:55