Ok, sorry, I shouldn't have posted too fast. We do not even have proof this post was indeed made by Tom Williams.
Still, if this is truth I would very much like to know how this could happen, especially after they claimed to be secure (see quote in 2nd post) so everyone in the community can learn from this, including ourselves.
That, in my opinion, is perfectly reasonable, and I'd like to know how such a thing happened as well. Herd immunity.

Unfortunately, no system is impenetrable, no matter how many security precautions are taken ... you can make the system pretty much completely unusable by trying, and there's still going to be some way in.