To prevent fraudulent charges, most merchants require customers to provide their debit or credit card number, its expiration date and a numeric code — known as a card security code — located ...

If you're attempting to add your debit card as a payment method in the Apple Inc. iTunes Store, but you repeatedly get an error message that insists you've entered ...

Other common terms include: CVV or CVV2 (card verification value) CVC or CVC2 (card verification code) CSC (card security ... thing — the security code on a debit or credit card.