End-to-end encryption has arrived for voice and video calls both for Facebook
source https://timesofindia.indiatimes.com/gadgets-news/facebook-messenger-is-getting-end-to-end-encryption-for-calls/articleshow/85330467.cms
source https://timesofindia.indiatimes.com/gadgets-news/facebook-messenger-is-getting-end-to-end-encryption-for-calls/articleshow/85330467.cms