| From: | Anthony W. Prime |
| Date: | 18 Apr 2001 at 00:11:25 |
| Subject: | Re: Phone Hoax E-mail |
Richard Friend. On Tue, 17 Apr 2001 you wrote:
>Is it not possible to clone a sim card? I know it used to be!
>I may be wrong, of course!
You`re probably thinking about Cloning of the old ETACS standard (which
didn`t have sim cards). With simple equiptment you could pull the required
information out of the air and clone a handset to believe it was another,
because the handset ESN was sent as a burst of tones and could easily be
decoded. That was one of the reasons behind the move to the GSM standard.
I`m sure Steven will give you a far more in depth answer than I (and correct
my errors), but gathering any information in this way from a GSM network is
virtually impossible as the handsets use encryption and timeshare with each
other to maximise bandwidth usage, and as mobile phones are, urm, mobile, the
timing of packets of data can vary within a short time if the user is in a
car or on a train.
Actually it amazes me that they connect at all. Oh wait a minute, one2one
handsets dont :0)
I understood the weakest point in the system was the potential to intercept
point to point microwave transmissions between the network infrastructure,
and I think you`d have to pretty game to try that :)
http://www.amiga.com So the world may know...
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