Apart from entering a card number and an expiration date, you probably will have to enter a security code — a feature on every credit card meant to help verify the card is in your possession.

Credit card numbers are used to identify the card network, the card issuer and the cardholder. Other numbers on a card include a security code, expiration date and a customer service phone number.

Many credit card companies now allow instant access to digital card numbers for use ... adds an extra layer of security by requiring a second verification step (e.g., a code sent to your phone ...

THE CROOKS ALREADY HAVE YOUR ENTIRE CREDIT CARD NUMBER. MAKING THIS SCAM SEEM ... FRONT OF YOU AND ASK YOU TO READ THE THREE DIGIT SECURITY CODE THAT’S ON THE BACK OF THE CARD.

and they never ask for or tell you the card number. Police say the real VISA Security Department says this is a scam, and what happens is that once you provide them with the 3-digit security code ...