Chase cards are fraud magnets. The bin is well-known, and Chase is short on card numbers, so people have actually brute-forced credit card numbers. Then they validate them by signing up for free trials of services using credit cards.

Chase is also the only major bank that still prints the entire 16 digit account number on every statement. Anyone without e-statements is a ripe target for mailbox thieves who now have the full name, address and card number.

Brute forcing died a long time ago. There aren't any services left that don't require a CVV.

that's not a valid concern as far as real life ux goes. the card issuer deals with any fraud.

these cards aren't uncommon, at least in high cost of living places because which are all dense cities.