WhatsApp implemented end-to-end encryption for its users last month. Users will be allowed to disable the encryption in their communication. Facebook hasnt yet confirmed or denied the implementation of strong encryption for Messenger. The tech industry has been working toward increasing security protocols as user demand for privacy has increased after the Snowden revelations about ongoing government surveillance. Google is also looking at adding stronger security layers for its messaging app. The app has over 900 million active users each month. It will be difficult to use the machine learning feature if strong encryption is implemented, Facebook said at its developer conference.”]
Source: https://www.bitdefender.com/blog/hotforsecurity/facebook-rolls-out-end-to-end-encryption/