Is SendBird server secure?

SendBird server uses Transport Layer Security (TLS) and Secure Sockets Layer (SSL). All communications to and from the server use TLS/SSL encryption with both server-side and client-side authentication for devices. In addition, the server is securely managed in ISO 27001, SSAE-16, SOC 1, SOC 2, and SOC 3 certified data centers.

If needed, you can implement end-to-end encryption before messages are sent and after they are received but moderation tools and search features will not work properly.