CREDIT CARD FRAUDS. RASTISLAV TUREK. Who am i. Blogger (blog.synopsi.com) Slovak Independent security consultant (synopsi.com) Twitterholic (almost 6 500 tweets in year and half) Technologist. Before we start. … little survey
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(almost 6 500 tweets in year and half)
… little survey
First modern credit card company
later Master Charge (1969)
later Master Card (1979)
Funds are withdrawn directly from customer's
Funds are withdrawn directly from bank's account
loaned to the customer
* Card Number Length
4 digit, printed on the back side
of card, AMEX on the front
Track 2 can be generated manually from track 1 and vice versa.
Also Track 3 can be generated from Track 1, but not vice versa.
to payment processor (encrypted)
ask him if your card is ok, if you have enough
money for this transaction (encrypted)
Real life examples
use three step payment
processors, which can tell in
first step, if a card is valid, in
second will check AVS (adress
verification system), if address
and zip are same as in card
and in third will try to make
or second step and not make
payment on card
a robot voice will request credit card number and for verification SSN
bank account in next day. This technique require
real working shop, which accept orders daily,
and cash only few stolen cards per day to not
make successfully order.
Why would somebody risk long jailtime?
here is the answer
+1 (615) SYN-OPSI