Those algorithms can be very good at detecting fraudulent transactions. However, I'm unfamiliar with systems designed to isolate the origin of the fraud. It's n

Those algorithms can be very good at detecting fraudulent transactions. However, I'm unfamiliar with systems designed to isolate the origin of the fraud. It's not hard trace a stolen card number to a dump of cards sold on the dark web, or the identity of a person using it after the theft, but it is quite hard to figure out how that person came into possession of the card. My subjective impression is that first-party theft + usage of stolen payment credentials is rare--they're usually passed along (sold) to someone else.