i simple solution to cut down on this is never allow more than 2 or 3 failed card attempt from a single ip address. You have to link it by ip because they will

i simple solution to cut down on this is never allow more than 2 or 3 failed card attempt from a single ip address. You have to link it by ip because they will just make a new account if you do it by account. Carder will move on to another site if running cards is not simple and fast