Solved

Illegal Credit Card Transactions

Posted on 2008-10-06
3
740 Views
Last Modified: 2013-11-29
I have a client that has a small ecommerce store front and he has been getting people that come to the web site and make fake orders to test out credit card numbers. So far the credit cards have been getting declined, but he just had some one come through with an approbed transaction.

What are things I can do to stop or help prevent this?
0
Comment
Question by:JRockFL
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 29

Expert Comment

by:coreybryant
ID: 22688824
Are they coming from a specific Class C / country?  Some gateways will allow you to block countries and IP addresses.  This would be a start.  

Most almost all carts will check for the mod 10 algorithm - this should be the first thing that is checked.  True, most hackers (for lack of a better word) will have checked this, but there are some hackers that just think that they have good CC numbers.  

A lot of merchants will do a pre-authorization on CC transactions.  This won't help on stopping the hackers, but it will help on those transactions that get approved.  It will probably cost the merchant another quarter - depending on the merchant / gateway - but it is better than getting a chargeback on any orders that slip through (which I have to assume are happening).
0
 
LVL 8

Author Comment

by:JRockFL
ID: 22690296
Thank you for you reply.
I'm not sure which country they are coming from, that would be start to only allow certain countries.
Where can I find more info on the mod 10 algorithm? I know this shopping cart does not check it.
0
 
LVL 29

Accepted Solution

by:
coreybryant earned 500 total points
ID: 22745868
Check out http://en.wikipedia.org/wiki/Luhn_algorithm - most carts check this by default, to help save the merchant the cost of a transaction fee.
0

Featured Post

Salesforce Has Never Been Easier

Improve and reinforce salesforce training & adoption using WalkMe's digital adoption platform. Start saving on costly employee training by creating fast intuitive Walk-Thrus for Salesforce. Claim your Free Account Now

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Paying with my Visa card 1 81
real estate wordpress plugin 8 64
PayPal India troubles 2 117
How to profit from my training video? 3 84
I recently read an article which suggested that 60% of businesses in the U.S. that process credit card details online in order to accept payment for goods or services were not Payment Card Industry security standards (PCI) compliant. This statement …
How important is it to take extra precautions to protect your online business? These are some steps you can take to make sure you're free of any cyber crime.
Viewers will get an overview of the benefits and risks of using Bitcoin to accept payments. What Bitcoin is: Legality: Risks: Benefits: Which businesses are best suited?: Other things you should know: How to get started:
You have products, that come in variants and want to set different prices for them? Watch this micro tutorial that describes how to configure prices for Magento super attributes. Assigning simple products to configurable: We assigned simple products…

733 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question