Key takeaways. Credit card security codes are three-digit codes on the back of your card (four-digits on the front if you have an American Express card) used to verify that have the physical card.

A credit card security code is a three- or four-digit number designed to prevent fraudulent transactions. You might hear this code referred to as the Card Verification Value (CVV).

Follow a fake QR code to a fraudulent site, and you could run into security risks. Your log-in credentials, credit card information, and financial information might be stolen. You could ...

More than 800,000 people in Europe and the US appear to have been duped into sharing card details and other sensitive personal data with a vast network of fake online designer shops apparently ...