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[liberationtech] more on sat phone (in)security

Jacob Appelbaum jacob at
Fri Feb 24 11:47:41 PST 2012

On 02/24/2012 05:14 AM, Miles Fidelman wrote:
> Bernard Tyers wrote:
>> The core of the issue here is that every RF emitting device is
>> vulnerable to location discovery. The only secure approach to these
>> technologies is not use them.
> Of course some RF emitting devices are more vulnerable than others. 
> Directional antennas help a lot.  So does spread spectrum.

Right. It also helps to not use a technology that discloses your exact
GPS location. This is possible to solve today with some systems/networks
by sending the spot beam ID rather than the GPS location.

All the best,

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