Transport Layer Security
Besides our end-to-end encryption, all communication between the clients (web browsers, Android app, iOS app) and the servers are layered with an extra separate strict encryption channel. Only TLS 1.2 is supported and is configured with the strongest cipher suites available, such as ECDH with elliptic curve 25519 and RSA 3072-bits., including a 4096-bit Diffie-Hellman parameter for DHE cipher suites.
Our strong TLS configurations enable HTTP Strict Transport Security (HSTS), OCSP Stapling, Forward Secrecy and protect against all known attacks such as Beast, Heartbleed, Poodle and much more.
Check out our TLS configuration on SSL Labs:
More information about Transport Layer Security:
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