It really depends on what you mean. It's not too hard to get a receiver that
can pick up GSM signals. Converting it to digital is a bit harder. Frequency
hopping.... getting expensive. Encryption -- depends on the version of GSM I
think. But you're talking about a nation state and as people said, almost
any nation state could replace your phone with custom hardware. Similarly
they can just query the telephone company.
I think the more fundamental question is can they possibly process a
reasonable amount of voice traffic for a large number of users? Data mining
itself is a monumental challenge. Converting (cellular) audio to something
that can be stored and analyzed in a reasonable manner is a huge endevour.
My final thought is that if you pissed someone off and they're targeting
you, then you're screwed. If you think the government is processing
everyone's cell calls -- i doubt they're doing it effectively.
On 10/1/07, Felix Dzerzhinsky <felixdzerzhinsky2_at_hotmail.com> wrote:
>
> Can anybody point me to a relaible source of information regarding the
> capability of the security forces in Cambodia to intercept GSM phones?
>
> I am talking about military SIGINT or police wiretapping here.
>
> Legally the police have the right to do so but do they have the technical
> capability?
>
>
>
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--
Matthew Wollenweber
mwollenweber_at_gmail.com | mjw_at_cyberwart.com
www.cyberwart.com
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Received on Oct 03 2007
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