Some issuers let you start using your credit card immediately after you're approved by giving you a card number. Here's what ...

So, it’s never a good idea to share your credit card number with anyone over the phone unless you called them. Did you know? The Luhn algorithm, developed by IBM engineer Hans Peter Luhn ...

Many credit card companies now allow instant access to digital card numbers for use in Apple Pay ... which can give them entry to password-reset links and sensitive notifications.