Hi Derrick,

Topic keeping you up at night?  J/K

The answer, of course, is "it depends."  The older the keyboard, the weaker (or not at all) the encryption.  Microsoft now has AES encryption available (http://news.techworld.com/security/3284218/new-microsoft-wireless-keyboard-gets-128-bit-encryption/).  Logitech had AES since at least 2009.  Google: wireless keyboard encryption

Also keep in mind some factors that mitigate wireless snooping risks:
* transmission power - not much you can do here, but the broadcast power is not that high - how far away does your keyboard work from the receiver?  In my experience, this is limited to about 3 feet (usually less - a lot less).
* distance to attacker's receiver - is the attacker in the same room or in a van with a high-gain antenna parked on the street?  If you have a van parked outside, you might want to reconsider your lifestyle :)  Seriously, this year's defcon demonstrated screen viewing by receiving the EM transmissions from the video cable (something the US and USSR were doing 25 years ago), so wired keyboard tapping is not too far away.
* shielding - do you have objects between you and the attacker that will absorb the transmissions?  With a wired keyboard, you can wrap the cable in a grounded coax sheath to shield the EM.  Wireless?  Might have to wrap your room/house in a Faraday cage.
* time - how much is your keyboard in use?  More use gives the attacker more data to capture and analyze.

Just some stuff to think about.  The threat is real, but the probability is very low, unless you have other factors in your life that would bring about the surveillance van, then the game is up - nothing you can do will save you.

Cheers!

George Toft

On 11/8/2013 1:16 AM, Derek Trotter wrote: