3 digit code check can not be cracked, with or without ML. You need other methods to verify if the code is working for a particular card number, most of which r

3 digit code check can not be cracked, with or without ML. You need other methods to verify if the code is working for a particular card number, most of which require trial(and error) payments. Furthermore, it is plausible that a credit card fraudster keeps notes on, well..., credit cards. Guy could have been old school skimming the card numbers and CVV from purchases at his newspaper stand.