I don't really know how you're going to do that. Sure, there's a handful
of test numbers that I know off the top of my head (4111111111111111 for
instance) but anyone who has any understanding of the algorithm can make
up any number they like. Heck, a couple years ago I created an Excel
file that would generate as many fake credit card numbers you wanted.
(We needed a bunch of unique invalid numbers that would pass the Luhn
test.)


-----Original Message-----
From: Mosh Teitelbaum [mailto:[EMAIL PROTECTED] 
Sent: Monday, April 17, 2006 1:13 PM
To: CF-Talk
Subject: RE: Catching bogus credit card numbers

Thanks Dave.

Actually, this client's site is setup to not authorize the orders
online.
They prefer to manually authorize them.  Once they ship the number to
the authorizer, it gets rejected (so Authorize.net or whomever are doing
their job).  But because they don't want the authorization to happen
online, the credit card number passes the LUHN check and gets passed on
for processing.
They'd like to catch these bogus orders before they get passed on.

Again, thanks.

--
Mosh Teitelbaum
evoch, LLC
Tel: (301) 942-5378
Fax: (301) 933-3651
Email: [EMAIL PROTECTED]
WWW: http://www.evoch.com/


> -----Original Message-----
> From: Dave Carabetta [mailto:[EMAIL PROTECTED]
> Sent: Monday, April 17, 2006 12:44 PM
> To: CF-Talk
> Subject: Re: Catching bogus credit card numbers
>
>
> On 4/17/06, Mosh Teitelbaum <[EMAIL PROTECTED]> wrote:
> > All:
> >
> > Does anyone have or know of a list of bogus credit card numbers
> that pass
> > the LUHN test?  Specifically, I'm looking for a list of "test"
> credit card
> > numbers that are never actually associated with a valid credit
> card but are
> > often used when testing new credit card services.  For example, 
> > "5105105105105100" for MasterCard.
> >
> > A client has been receiving online orders using the above
> credit card number
> > and would like to have these bogus orders removed automatically.
> >
>
> http://www.verisign.com/support/payflow/manager/selfHelp/testCardNum.h
> tml
>
> That being said, any credit card processor in "production" mode should

> automatically be rejecting these numbers anyway. If not, switch 
> vendors. That's awful security.
>
> Regards,
> Dave.
>
> 



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