3D-Secure is a security protocol that provides an additional layer of security for online credit/debit card transactions. It allows an issuing bank to authenticate their cardholders during Card Not Present (CNP) transactions. If the authentication is successful, liability for fraudulent transactions shifts away from the merchant to the card issuer, reducing chargebacks to the merchant.

For more information about 3D-Secure, see the main 3D-Secure page and the 3D-Secure Explained page.

The REST 2.0 3D-Secure Guide consists of:

• 3DS Implementations
• 3DS Functions