Can Skype be wiretapped by the authorities? (fwd from em at

John Kelsey kelsey.j at
Fri May 14 13:45:22 PDT 2004

At 01:40 PM 5/10/04 -0500, Brian Dunbar wrote:

>On May 10, 2004, at 1:30 PM, Jack Lloyd wrote:
>>Like it matters. Do you really think that the government would really allow
>>Intel and AMD to sell CPUs that didn't have tiny transmitters in them? 
>>Your CPU
>>is actually transmitting every instruction it executes to the satellites.
>That's a subtle bit of humor, right?

Actually, pretty much all unshielded computer hardware effectively has a 
transmitter in it.  Google for "side-channel attacks" "DPA" and "TEMPEST" 
for more info.  That's not a matter of transmitting to the satellites, but 
it may be a matter of transmitting to the van parked outside your house....


--John Kelsey, kelsey.j at
PGP: FA48 3237 9AD5 30AC EEDD  BBC8 2A80 6948 4CAA F259

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