3D Secure
3D Secure is a fraud prevention tool used by online merchants. It helps verify that the shopper is the actual cardholder. 3D Secure is known by network-specific product names including Visa Secure (formerly Verified by Visa) and Mastercard SecureCode.
3D Secure was recently updated to 3D Secure 2.0. Learn more about 3D Secure 2.0 here.