From Ross Ulbrichts journal (late 2011):
"Around this time, Variety Jones showed up. This was the biggest and strongest willed character I had met through the site thus far. He quickly proved to me that he had value by pointing out a major security hole in the site I was unaware of.
It was an attack on bitcoind."
What type of attack was he refering to?
(More about Variety Jones here:
https://bitcointalk.org/index.php?topic=935434.0 )