Perform fraud check upon each manual credit card payment attempt
It would be beneficial to me if an additional fraud check was performed each time an invoice is manually paid via creditcard.php.
I have reason to believe carders are placing orders, passing the initial fraud-check, but the provided card details are declined. They then use the creditcard.php page to attempt different stolen card details until a payment is authorized.
My particular merchant gateway levies a fee for declined transactions, so this is costing me money, in addition to the charge-backs which later occur due to the use of stolen card details.
Therefore I propose performing an additional fraud check on manual payments on creditcard.php to block such behavoiur.