Discover how credit card validation codes work and protect against fraud. Learn about their placement, security role, and examples to secure online transactions.

A credit card authorization key is a secure code used to process transactions, confirming purchases and preventing fraud ...

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. You typically ...

Gun control advocates are cheering a new change in the credit card industry that they say could help prevent gun violence. This week, credit card companies Visa, Mastercard and American Express all ...

Code offers "significant" new tool for identifying shooters, one advocate said. A gunman in Aurora, Colorado, who killed 12 people in a mass shooting at a movie theater, in 2012, legally acquired ...