Facebook’s Messenger service is not yet end-to-end encrypted by default, despite the bold promises CEO Mark Zuckerberg made last March. While the move would give Facebook Messenger’s one billion users access to significantly more secure communications, it isn’t going to happen any time soon, according to Wired.
The reason for this is surprising: It’s not because Facebook needs to drastically change its business model, or due to interference from law enforcement who have their eyes on encryption. It’s actually because of the massive technical challenge involved.