As people become more and more concerned about security, offering a messaging app means being that the app absolutely must be secure. Facebook is finally adding an option for users to encrypt their chats in Messenger.
Messenger will begin to offer an end-to-end encryption feature to a limited test group of users today. The so-called “secret conversations” will be only visible to the sender and the reader, which means Facebook can’t enable some of the chatbot and payment features that are normally a part of the Messenger experience. However, end-to-end encryption boxes out law enforcement and even Facebook itself from reading users’ chats, ensuring that their conversations remain private.
You can read the full announcement at https://techcrunch.com/2016/07/08/messenger-adds-end-to-end-encryption/.