Helcim API calls are made over HTTPS (port 443) and the connection is secured using an SSL certificate with a SHA256 key. To adhere to strong PCI-DSS standards we've disconnected weak connections and ciphers, including SSLv3, TLS1.0 and TLS1.1.
Below is a complete list of allowed ciphers:
EECDH+ECDSA+AESGCM EECDH+aRSA+AESGCM EECDH+ECDSA+SHA384 EECDH+ECDSA+SHA256 EECDH+aRSA+SHA384 EECDH+aRSA+SHA256 EECDH EDH+aRSA
Updated 3 months ago