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Background - we use customer profiles (Accept Customer - formally Hosted CIM) to submit payment transactions and also to be reused for recurring subscriptions.Our code follows the directions in https://developer.authorize.net/api/reference/features/c...

We are using the accept customer hosted form solution right now and we are in a situation where someone is using our form to test credit card numbers to see if they are valid. They are inputting a lot of cards so it seems likely a script is being use...