Heise reports June 17 2009 about problems with wireless keyboards:


Software for cracking wireless keyboard encryption published

Optical Desktop 1000 and 2000 wireless keyboard users should consider replacing them with a wired keyboard as it has now become a practical possibility for attackers to sniff out their keystrokes. About one and a half years after announcing that they cracked Microsoft's wireless keyboard encryption, Max Moser and Thorsten Schröder of Dreamlab have published the required Keykeriki software as well as instructions for building the sniffing hardware (circuit diagram and board layout in Eagle format).

The hardware is based around the Texas Instruments TRF7900A 27 MHz receiver used in wireless mice and keyboards. It's controlled via an 8-bit Atmel controller. Dreamlab is even considering selling readily assembled hardware units.

More:
http://www.h-online.com/security/Software-...d--/news/113558