Facebook has begun testing end-to-end encryption for conversations in Messenger. Dubbed "secret conversations," encryption allows you to securely message your friends and loved ones securely, in a way that nobody else, not even Facebook, can see.
Facebook is using the Signal Protocol built by Open Whisper Systems to develop secret conversations. The company is rolling out the encryption option to only a small subset of people at this time, with a wider rollout is expected later this summer.
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