As outlined in my post Do payment gateways or shopping cart providers really care about credit card fraud? our website was used to screen thousands of credit cards and we were charged processing fees for each attempt (see Notice from Chase Your Authorization Activity Is At Risk Due Possible Card Testing) back in April. I…»

Yesterday, 26 days after the first stolen credit card screening event mentioned in my previous post I received a notice from Chase titled “Your authorization activity is a risk”. The message stated that our ability to authorize transactions is at risk due to a high number of declined transactions that might be a form of…»

In the weeks since I reopend checkout on our website I have seen several very clear attempts at screening stolen credit cards using checkout on our website. The first occurred on 4/06/2018 with about 8,600 attempts to charge different credit cards. All the attempts were generated from 3 orders with similar fake email addresses and…»