Payment card acquirers, processors, gateways and services providers worldwide are working to implement more secure encryption protocols for transactions. They’re required to discontinue the use of Secure Sockets Layer and early versions of Transport Layer Security. SSL/early TLS has been targeted by security researchers and attackers. Many serious vulnerabilities in SSL and early TLS have been uncovered over the past 20 years, making it an unsafe method for protecting sensitive data (e.g. POODLE, BEAST, CRIME and Heartbleed)”]
Source: https://www.careersinfosecurity.com/payments-industry-ready-for-new-encryption-protocols-a-10955