Comment by jbverschoor

Secret chats are not the default. So Telegram can simply read them.

In whatsapp, messages have always been on-device / in-memory, where they belong, doing a p2p sync/transfer

> 1. Is There a Secret Chat On Telegram Desktop?

> No. Due to Telegram secret chat's end-to-end encryption and the requirement for permanent storage on the device (and not using the Cloud to store data), Telegram does not have the secret chat feature on Desktop or Web Telegram. They may add this feature on their desktop version in the future, but for now, it is not safe enough to have it.