»Telegram Is Not End-to-End Encrypted by Default and You Have to Start 'Secret Chat' Manually, Here's How 2-MIN READ Telegram Is Not End-to-End Encrypted by Default and You Have to Start 'Secret Chat' Manually, Here's How Image for Representation (File Photo) Telegram explains that a regular chat uses server-client encryption (c2s) that essentially encrypts data through cryptographic techniques before it is transmitted. Whereas end-to-end has to be enabled manually to start a 'secret chat.' FOLLOW US ON: Telegram's popularity is on the rise, thanks to WhatsApp's updated terms of service that has sparked a massive debate around user-data privacy. The company has also promoted itself for offering "safer" and "more secure" messaging experience over its competitors, for a very long time. The messaging platform similar to WhatsApp further provides a host of user-friendly features such as group chats, video and voice calling, among many. However, it appears that Telegram's chats - both personal and group - do not have end-to-end (e2e) on by default, and users have to start a 'secret chat' manually to enjoy that extra layer of security.