The article is extremely vague on how they did this. The one big red flag though is that the protocol for the messenger in the article was a bespoke secret des

The article is extremely vague on how they did this. The one big red flag though is that the protocol for the messenger in the article was a bespoke secret design by a single person who wasn't a cryptographer and not a well vetted public one. I would love to see a technical analysis of the supposed end-to-end encryption methodology used here.