Card Association Data Protection Programs
Each of the major card association has its own data protection program. The combination and standardization of these programs has become the Payment Card Industry Standard.
Visa - Cardholder Information Security Program
MasterCard - Site Data Protection Program
American Express - Data Security Operating Policy
Discover - Information Security and Compliance
The organization founded by Visa International MasterCard Worldwide, American Express and Discover Financial Services to enhance payment account data security is the PCI Security Standards Council
