what do two checks mean on the signal messenger app

However, the caveat is that these attacks are extremely difficult to pull off in practice, so nobody needs to panic. If all you want is the TL DR, here’s the headline finding: due to flaws in both Signal and WhatsApp (which I single out because I use them), it’s theoretically possible for strangers to add themselves to an encrypted group chat. This result comes from a new paper by Rösler, Mainka and Schwenk from Ruhr-Universität Bochum (affectionately known as “RUB”). The RUB paper paper takes a close look at the problem of group messaging, and finds that while messengers may be doing fine with normal (pairwise) messaging, group messaging is still kind of a hack. If nothing else, today’s post helped disabuse me of that notion.

That is, I was starting to believe that most of the interesting problems had finally been solved. My sadness comes from the fact that lately these systems have been getting too damned good. However, recently I’ve been a bit disappointed. If you’ve read this blog before, you know that secure messaging is one of my favorite topics.

What do two checks mean on the signal messenger app