Tor itself has a known security vulnerability on exit nodes.
What security vulnerability? Tor is has almost never the weakest link. I feel like that FAQ is making a lot of claims and not many sources are given.
Bud you need to keep up. NSA has backdoored TOR and the last SR bust apparently came from leaky ip codes.
That might be true, however it has not been proven. What they mean is that a Tor exit node (which anybody can set up) can be easily sniffed by performing a man in the middle attack, stealing your data.