Author Topic: Eavesdropping on What You Type on the Keyboard  (Read 550 times)

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Eavesdropping on What You Type on the Keyboard
« on: October 22, 2008, 06:38:39 AM »
Computer criminals could soon be eavesdropping on what you type by analysing the electromagnetic signals produced by every key press.

By analysing the signals produced by keystrokes, Swiss researchers have reproduced what a target typed.

The security researchers have developed four attacks that work on a wide variety of computer keyboards.

The results led the researchers to declare keyboards were "not safe to transmit sensitive information".

Better attacks

The attacks were dreamed up by doctoral students Martin Vuagnoux and Sylvain Pasini from the Security and Cryptography Laboratory at the Swiss Ecole Polytechnique Federale de Lausanne (EPFL).

The EPFL students tested 11 different keyboard models that connected to a computer via either a USB or a PS/2 socket. The attacks they developed also worked with keyboards embedded in laptops.

Every keyboard tested was vulnerable to at least one of the four attacks the researchers used. One attack was shown to work over a distance of 20 metres.

In their work the researchers used a radio antenna to "fully or partially recover keystrokes" by spotting the electromagnetic radiation emitted when keys were pressed.

In a web posting they added: "no doubt that our attacks can be significantly improved, since we used relatively unexpensive equipments [sic]." - BBC News

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