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Re: TIME Magazine on GSM cell phone crack

daemon@ATHENA.MIT.EDU (Marc Briceno)
Tue Apr 14 18:14:38 1998

Date: Wed, 15 Apr 1998 08:00:53 +1000 (EST)
From: Marc Briceno <marc@cryptsoft.com>
Reply-To: marc@cryptsoft.com
To: cryptography@c2.net

Jyri wrote:
>Actually how would a cloned phone work in a real network, next to the
>original? Will they both work next to each-other? Will they both ring at
>the same time? Will some networks block the whole number when they see 2
>phones with same number registering to the network?

Depends on the base station. We have received several reports that on at
least some system located in Europe, the US, and Asia, one of the phones
will ring at random when the cloned number is called. We are also told
that the network does not check for duplicates, nor are duplicates flagged
or disabled by at least some base stations.

All this would of course contradict the statements made many times by
equipment manufacturers and providers. But then, they used to claim that
GSM phones can't be cloned. :-)

-- Marc Briceno <marc@scard.org>
   http://www.scard.org


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