I wrote Bravo. One of my big supporters is a guy who has been involved with Mojang's inner workings for a long time, and who has told many a horror story about the inner circles of MC communities. (Name withheld for privacy reasons.) There are Mojang employees, like mollstam (the webmaster), chilling in our IRC channel, but we're really not able to get much information transferred back and forth. Things like on-the-wire exploits and data leaks aren't received by upstream in a reasonable timeframe, which makes it painful to do good security.