Facebook Messenger begins testing end-to-end encryption using Signal Protocol
From what is written, I understand this to mean that users can select this feature for specific conversations. That not all messages are subject to this encryption.I am not usually one for paranoia, but is anyone else becoming more suspicious about Facebooks motivations and involvement with gov? This feature is a massive boost for intelligence services dealing with unsophisticated actors. This reduces the haystack significantly, by users self flagging messages that may be incriminating. Multi-millions of FB messages must be sent every day, brute-forcing encryption on all of these is probably not possible. A small % marked as 'secret conversation'? Much easier.Why doesn't FB just apply encryption on all messages? Surely they have the resources avail. Is it because this feature makes somebody else's job a lot easier?
If my suspicions are correct, what sort of threats would this pick up. Are serious threats likely to use FB messages with 'secret conversation' flagged to co-ordinate actions?