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Erasing the issuer with the port ps / 2
Very clever option keylogger implemented laboratory staff security and cryptography at Polytechnic Institute of Lausanne (Ecole Polytechnique Federale de Lausanne). They created the method is able to recognize key presses by the remote scanning of EMR from PS / 2 port, USB-port or laptop keyboard with a subsequent analysis of the signal frequency. The fact is that when you press each key generated electromagnetic pulse with unique characteristics. You can take it off right from the port, and subsequently decrypted.



The work of the researchers mentioned four different scanning method, some of whom work at a distance of 20 meters.

During the experiments, the Swiss experts have tested 11 different models of keyboards that connect to the system unit via USB and PS / 2. They were all vulnerable to at least one method of remote scanning even when prowhisper through a wall from an adjoining room (video can be viewed at the link above for screenshots habrakatom).

Here's workplace, "the operator of the electromagnetic exploration.



For high-quality pickup EMR requires a fairly massive antenna. It is aimed at a wall, behind which there is a "victim".



Notebook victim is on the table, three meters from the wall, turned to the side wall. He was taken out of the DC-cable to the signal was fed clearer.



The study's authors emphasize that in their experiments used relatively inexpensive equipment. For example, here is this a normal oscilloscope.



They do not doubt that the quality of remote scanning can be greatly improved. Detailed research results will be published in scientific journals in the near future.

Via BBC
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