Home > Storage > ObjectScale and ECS > Product Documentation > ECS PCI DSS Compliance > Requirement 4: Encrypt transmission of cardholder data across open, public networks
This requirement is specific to data transmission across open, public networks such as the Internet and cellular or satellite communication.
ECS encrypted the data by AES256 with Cipher Block Chaining and sent with each site via https. For data across public networks are secured through TLS 1.2/HTTPS.