Re: SMS Banking

[Markus Matiaschek <mmatiaschek () gmail com>]

Hi,

I'd just like to make some comments, i didn't think about a solution
for your problem.

First of all i think that my Budi wibowo got something wrong regarding
who is sending the PIN.

Second, GSM is cracked: http://reflextor.com/trac/a51 and can be
intercepted and decrypted. You should take this into account.

Third i think the only farely safe way to make money transfers is with
transaction numbers, TANs. German banks send mobileTANs to
preregistered cell phone numbers to allow a transaction (through
online banking though).
A "three-way-handshake" with a mTAN should pretty much prevent
transactions through spoofed numbers.

regards,
Markus Matiaschek
Absolute IT Consulting S.A.
San José, Costa Rica

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