GSM Security ala global-security-solutions

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d1skreet - 20 Jun 2005 19:15 GMT

I'm not too farmiliar with GSM security, but this whole "Global Security
Solutions" company looks like bullshit to me. Anyone have any experience
with them or any idea if they're at all legitimate? Their website is:
http://www.global-security-solutions.com and I can get you more contact
info. The specific product i'm refering too when accusing this company of
being full of sh.t is a "GSM interceptor" you can take a look at it here:
http://www.global-security-solutions.com/PGFDigitalCellularIntercepter.htm

Thanks in advance for any help you can provide.

Dan

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Michael Schmidt - 21 Jun 2005 08:52 GMT

Hi Dan,

Most likely, it's true what they write. In the GSM world, there's a
tapping device called 'IMSI catcher', that impersonates a GSM base
station (BS) and acts as man-in-the-middle between a real BS and the
subscriber (mobile station - MS). This is possible, because the BS
authenticates the MS, but not the other way round. Not sure about the
TDMA (D-AMPS) part they mention, though.

You may find more information about IMSI catchers when you google for it
(although most results are German). European police authorities
typically have it.

Hope this helps,

Michael

d1skreet schrieb:

> I'm not too farmiliar with GSM security, but this whole "Global Security
> Solutions" company looks like bullshit to me. Anyone have any experience
[quoted text clipped - 7 lines]
>
> Dan

Signature

Michael Schmidt
University of Siegen, Germany
http: www.dcs.uni-siegen.de
e-mail: schmidt _at_ nue.et-inf.uni-siegen.de

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