Facebook wants you to put your full trust in them The social media giant is 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 Messenger has also taken steps to make sure that chats remain secure, even if a user’s device gets lost or stolen In secret conversations, Messenger will allow users to set an expiration date for a message so that it won’t be visible in the conversation forever