Aside from the card number itself, the CVV is one of the most important numbers on your credit or debit card. This three- or four-digit code is designed to prevent fraud. "The CVV was first devised as ...

The location of your credit card's CVV, or security code, varies based on what credit card you have. The three- or four-digit CVV number makes fraud more difficult, since it acts as a form of ...

Evan Zimmer has been writing about finance for years. After graduating with a journalism degree from SUNY Oswego, he wrote credit card content for Credit Card Insider (now Money Tips) before moving to ...