What is 3D secure?

3 Domain Secure (3DS) is a security measure for online payments which provides additional protection against fraud.

The 3 domains (acquirer, scheme, and issuer) interact with each other to exchange information and authenticate the transaction.

3D Secure helps prevent fraud and is available for Card Not Present (CNP) transactions with all major card networks, and is mandatory in the EU, following the Revised Payment Services Directive (PSD2).