been in pub games but nothings happened to me, though i'm only in a2 nm (stupid job T_T )
my brother howerver is somewhere in hell, today he got logged off saying he logged in elsewhere or somesuch, he paniced and uber-quickly (srsly i was shocked how fast he did it) changed his password, didnt loose anything
not 100% sure he was getting hacked, but wouldnt surprise me.
no authenticators, but frankly, I've been a computer tech for 5 years professionally. I don't get viruses, and when I do I know what I'm walking into, and my brother doesnt do stupid things like try to download a dupe for a week old game from angelfire.com/d3dupe.exe