A virtual credit card is a single-use card number that's randomly generated and attached to your existing credit card account. The card number allows you to make payments using your credit card ...

Discover how the Luhn Algorithm verifies credit card accuracy, supports secure transactions, and helps prevent errors in inputting Social Security numbers.

To avoid credit card theft, it’s not enough to simply keep your credit card in a secure place — you have to monitor your credit card statements and credit reports routinely for signs of fraud. As data ...