Physical security rather than crypto---but perhaps of interest

Charles Jackson clj at
Mon Jul 13 18:05:04 EDT 2009

[Moderator's note: It is helpful, when posting a link, to give enough
information that people can know whether they want to go and read the
article. In this case, the title and first few sentences are:

   Snooping through the power socket

   Power sockets can be used to eavesdrop on what people type on a

   Security researchers found that poor shielding on some keyboard
   cables means useful data can be leaked about each character typed.

   By analysing the information leaking onto power circuits, the
   researchers could see what a target was typing.

   The attack has been demonstrated to work at a distance of up to 15m,
   but refinement may mean it could work over much longer distances.

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