A card security code is a three- or four-digit number on the back of credit and debit cards that ensures the authenticity of transactions when a physical card is not presented at the point of sale.

Today's debit and credit cards include a verification or security code. This is a four-digit code printed on the front of American Express cards and a three-digit version on the back of MasterCard ...

CVV stands for card verification value. It’s a three- or four-digit number found on most debit and credit cards. There are several other acronyms for this security feature within the industry.

Banks and merchants stepped up security for in-person transactions by introducing chip-based debit and credit cards. This technology enables the internal code to change each time the card is read ...

A credit card CVV, or card verification value, is a three- or four-digit security code that appears on your credit card and is used to prevent fraud.

Closely guard your credit card security code unless you are certain that a legitimate business needs it – and only if you initiate a transaction.

Signatures are to be officially abolished on credit and debit card purchases of more than $100 from 1 August and replaced with PIN codes.

Banks are considering adopting debit and credit cards where the security code changes every hour, to keep ahead of online fraudsters.