4 ms·
The first four are not secrets. The first two digits identify the card issuer, and the next two are the card type. That's how those credit card numbers can show
by malfist 3y ago
The first four are not secrets. The first two digits identify the card issuer, and the next two are the card type. That's how those credit card numbers can show you your card issuer's logo after you type the first two characters.
- lights0123 3y agoRight—they're saying it would be easy for a scammer to "prove legitimacy" by showing those first four, given that they're public.