The Payment Card Industry Data Security Standard (PCI DSS) is a comprehensive security standard established by card organizations that establishes common processes and precautions for handling, processing, storing, and transmitting card data. The purpose of PCI DSS is to minimize the security risks of payments made in the e-store. All participants in the card payment process who wish to store, process or transmit cardholder data must comply with PCI requirements. The digital payment service provider is PCI DSS level 1 certified.
Read more about PCI here.