Stopping Credit Card Testers

Hello, we’ve been getting hit pretty hard on our Magento platform with credit card testers. We’ve tried installing Google’s invisible recaptcha but that doesn’t seem to even slow them down.

We’re pretty sure they are using a bot due to the time between attempted transaction. I know I can use page rules but I’m worried I will make it inconvenient for our customers if they have an AVS mismatch or something and have to resubmit their order attempts multiple times thus getting caught in the page rule.

Anyone else used Cloudflare to stop credit card testers?

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