Keyboard acoustics could let hackers untangle typed text through Skype

Those worried about their personal information leaking over the internet may already fear keystroke logging software, but a new study cautions against typing while Skyping. By analyzing the acoustic signals of key presses, hackers may be able to untangle typed text through the clickety-clack of a keyboard itself, with an alarming accuracy of over 90 percent.

Anyone who uses a keyboard regularly knows that the sounds produced by typing differ by device brand and style, but to a tuned ear, individual keys on the same keyboard produce unique acoustic signals. With the help of some machine learning algorithms and an understanding of the user’s typing style, these sounds can be enough for a hacker to recreate large sections of text, passwords and all.

“It’s possible to build a profile of the acoustic emanation generated by each key on a given keyboard,” says Gene Tsudik, co-author of the study. “For example, the T on a MacBook Pro ‘sounds’ different from the same letter on another manufacturer’s product. It also sounds different from the R on the same keyboard, which is right next to T.” For the full article click here 

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