Hot answers tagged fraud
I would say: Ask your acquirer. If you roll your own library or use a 3rd party service, the rate limiting might not Count towards you in "fraud fighting score" at all, and you will still be liable if the order makes it through. If you select such services by your acquirer, then the acquirer knows that you are actively fighting against fraud, and the ...
You didn't specify what your site is built with. If by chance you're using Ruby, there is an excellent rack-attack library by Kickstarter.
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