Facebook now officially supports end-to-end encryption for all of its 1 billion users.
The company employs technology from Open Whisper Systems, which also enables the end-to-end encryption for WhatsApp. Facebook hasn’t made a public announcement, but Wired said sources inside the company have confirmed the additional security measure is available for everyone.
You really should be using end-to-end encryption for all chats, since it essentially blocks anyone from snooping in on your conversation. In fact, it’s a bit bizarre that Facebook didn’t just enable this by default, as it does with WhatsApp and as Apple does with iMessage. Wired said the “Secret”options such as stickers will continue to work with the function enabled but I suspect other functions, such as bots, won’t.
Be sure to tap the “Secret” button in your chat to keep your conversation private. And leave it on.
Article source: http://www.technobuffalo.com/2016/10/04/facebook-messenger-end-to-end-encryption-available/