The Payment Card Industry Data Security Standard (PCI DSS) is a defined standard that acknowledges a set of Policies and Procedures planned to enhance the security of payment card, cash card exchanges and ensure cardholders against abuse of their own data. The PCI DSS was made together in 2004 by four noteworthy Credit-card organizations: Visa, MasterCard, Discover and American Express. After 30 June 2018, all entities must have stopped use of SSL/early TLS as a security control, and use only secure versions of the protocol protocol.”]
Source: https://gbhackers.com/pci-dss-version-3-2-1-released/