Nah, the lowest digit of a credit card is a checksum, and the first few digits identify the credit card company, so it’s pretty trivial to narrow down the possible options
Standard compliance rules generally allow showing the first six and last four digits on a statement or receipt or whatever. That leaves 6 digits, and since you know it has to match the cksum, 1/100,000 odds on straight guess.
You may be able to knock down two more digits if you know which bank and card type (debit, prepaid, etc) it is. The first 6 digits used to encapsulate that data but there’s a transition to 8 now.
Sure, but in this case we have a credit card number summed with a 3-4 digit number (which you don’t have to guess the length bc of the first digits of the processor identificatoon). You can try every permutation of 3-4 digit number taken out, and eliminate all the ones that don’t have a valid checksum
Nah, the lowest digit of a credit card is a checksum, and the first few digits identify the credit card company, so it’s pretty trivial to narrow down the possible options
Standard compliance rules generally allow showing the first six and last four digits on a statement or receipt or whatever. That leaves 6 digits, and since you know it has to match the cksum, 1/100,000 odds on straight guess.
You may be able to knock down two more digits if you know which bank and card type (debit, prepaid, etc) it is. The first 6 digits used to encapsulate that data but there’s a transition to 8 now.
Sure, but in this case we have a credit card number summed with a 3-4 digit number (which you don’t have to guess the length bc of the first digits of the processor identificatoon). You can try every permutation of 3-4 digit number taken out, and eliminate all the ones that don’t have a valid checksum