>Communication technology didn’t change much in that timeframe
I find it plausible that de facto availability of secure communication channels had a lowered enough technical bar that thresholds were passed in that time frame.
Yeah, maybe. Messenger’s user base doubled over that timeframe, though was already at 600 million users in early 2015.
Facebook did roll out opt-in end-to-end encryption for Messenger in late 2016, which is a possible inflection for this.
>Communication technology didn’t change much in that timeframe
I find it plausible that de facto availability of secure communication channels had a lowered enough technical bar that thresholds were passed in that time frame.
Yeah, maybe. Messenger’s user base doubled over that timeframe, though was already at 600 million users in early 2015.
Facebook did roll out opt-in end-to-end encryption for Messenger in late 2016, which is a possible inflection for this.