With secret conversations in Messenger, Facebook offers support for end-to-end encryption, giving you peace of mind knowing that a third party cannot decipher any sensitive messages with friends and family. These encrypted chats rely on a device key that ensures only you and the recipient can see the message.
You can verify the device key to confirm that the messages are end-to-end encrypted, set a timer to have secret messages disappear from the conversation, and so forth.
In this article, we show you how to set up and use end-to-end encrypted secret conversations in Facebook Messenger.