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Secret Conversations are available only for one-to-one conversations and will not tie into past chats with a user - meaning that if you were talking with a coworker via Messenger for months, the new secret message would not retrofit the past conversation into a private encrypted thread instead it would begin a new and separate conversation. The service is currently available to all users of Messenger on Android and iOS, and it provides optional end-to-end encryption for users.
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It comes from a messaging service many are already using, Facebook Messenger. Do you like privacy? Well, let me introduce you to a new player in the encrypted messaging game: Secret Conversations.
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