PCI DSS is a certification process developed by Visa and Mastercard. It evaluates an organization’s ability to process, transfer, and store card data securely, and grants certification if compliance is met. The most comprehensive level is Level 1.
Companies with Level 1 certification are verified by official auditors as having sufficient capabilities for secure card storage.
Paywall holds a PCI-DSS Level 1 certification and successfully completes its audits every year.