[lini]

You should add basic rate limiting to your app. We had a similar issue with Stripe and making sure that different card numbers could not be quickly used one after the other by the same account fixed the problem.

[prirun]

Seems like this should be the default setup on Stripe's end.

[PenguinCoder]

Did you do this on your app itself or is there a way to have stripe do it for you?