Tag Archives: Authorize.net

Detecting Credit Card Fraud – Frequency Algorithm

About 13 years ago I created my first integration with Authorize.net for a client who wanted to accept credit card payments directly on his website. The internet has changed a lot since then and the frequency of fraud attempts has increased. One credit card fraud signature I identified while reviewing my server logs for one […]

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Refactoring to interfaces

The information below was delivered to one of my programmers as direction for how to implement a rather big change in an existing software product that I sell. I thought it was potentially useful to a broader audience, so I’m posting it here: …The rest of this is rather complicated to explain online. I’ll do […]

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