3-D Secure is an protocol developed by Visa to improve the security of Internet payments.
It seems that it is a double protection system when clients makes a purchase using their cards on the internet. The figure is presented a transaction flow of 3D secure system by Visa .
Stakeholders in a typical transaction :
1. Cardholder
2. Merchant
3. Issuer
4. Acquirer
5. Associations - Visa® and MasterCard™.
Note: See a good demonstration >>
