Fri, January 10, 2025 at 2:41 AM UTC If you’ve ever purchased anything online or over the phone and paid with a credit card, you more likely than not have been asked for your card’s security code.

Hanna Horvath is a CERTIFIED FINANCIAL PLANNER™ and Red Venture's senior editor of content partnerships. Fox Money is a personal finance hub featuring content generated by Credible Operations, Inc.

Credit card authentication is a way of verifying that a person attempting a credit card transaction is who they say they are and that they are authorized to use that card.