Visa, Mastercard, American Express, Discover, JCB are the five that started PCI-DSS [1]: https://en.wikipedia.org/wiki/Payment_Card_Industry_Data_Security_Stan

Visa, Mastercard, American Express, Discover, JCB are the five that started PCI-DSS [1]: https://en.wikipedia.org/wiki/Payment_Card_Industry_Data_Security_Standard https://en.wikipedia.org/wiki/Payment_Card_Industry_Data_Sec... [2]: https://www.pcisecuritystandards.org/ https://www.pcisecuritystandards.org/