Proxy Checks to Prevent Credit Card Fraud

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ccoscina
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Proxy Checks to Prevent Credit Card Fraud

Post by ccoscina » Fri Jul 17, 2015 11:10 am

We have been having alot of fraudulent credit card orders going into our database lately. These orders are always placed by people using proxy servers to hide their real IP address. I know that it will be difficult to ever figure out their actual IP address, but many online tools have been able to determine that they are probably using a proxy.

However, manually checking these IP addresses takes up alot of time, especially since we're doing hundreds of orders a day (not a ton, I know, but we're a small company), so we don't have the time to check every IP address that goes through the system to see if it's behind a proxy.

I'm hoping I can figure out a way to write some code that automatically checks if the user is probably using a proxy, and then automatically sends us an email if that's the case. We're using .NET, but I also have experience with many languages/frameworks and can think outside the box to get this done. Basically, I just want to write some code to automate checks similar to the ones performed at:
http://whatismyipaddress.com/proxy-check

If anyone give any suggestions about how I could pull this off, please let me know. Obtaining the IP addresses of our customers is the easy part - we have the data - I just need to figure out how to do these proxy checks on my end.

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Chrispcritters
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Re: Proxy Checks to Prevent Credit Card Fraud

Post by Chrispcritters » Fri Jul 17, 2015 9:47 pm

We're working to provide such a service. In the mean time you may want to look into MaxMind's MinFraud service @ https://www.maxmind.com/en/minfraud-services
Founder & CEO of WhatIsMyIPAddress.com.
You can follow me on Twitter and Facebook for some behind the scenes info.

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