The PCI-DSS standards are designed to help protect card-holder data. The specific section we’re interested in is section 4.1 of the v1.2 revision of the standards which are available for download here: https://www.pcisecuritystandards.org/security_standards/pci_dss_download_agreement.html The standards layout that you should use strong cryptography and security protocols when transmitting card data over open, public networks (ie the [...]