If you are talking about the SS7 MITM attacks, that something that I think happens with just any messenger out based on SMS checks out there.
Thankfully you can enable password auth at any time.
If you are talking about those possible in a reasonable timeframe SH1 collisions based attacks in secure chats, I think that has been fixed this february by upping key size
As per encrypt-then-MAC they have a faq entry that cite "performance reasons", and still no secure compromise.
Reliance on a trusted server (cloud chats) is quite about *convenience* most of people research.
Re: Yes, you can pick all three, and you can do it right now.
Thankfully you can enable password auth at any time.
If you are talking about those possible in a reasonable timeframe SH1 collisions based attacks in secure chats, I think that has been fixed this february by upping key size
As per encrypt-then-MAC they have a faq entry that cite "performance reasons", and still no secure compromise.
Reliance on a trusted server (cloud chats) is quite about *convenience* most of people research.