Since 2001 I’ve run online discussion forums. PhpBB was my first software but they had a major software exploitation back in December 2004 that brought down my forum network. The release of Phpbb 2 and 3 seemed to alleviate a lot of the problems, but in the meantime I switched many forums over to VBulletin.
I haven’t had my phpBB 2.x sites hacked but have had several hacks on VBulletin. They seem to have increased in 2011 with an almost monthly hack on one of my forums. Normally just kids having fun and reading instructions on how to hack using the latest software vulnerability in VBulletin 4.x. But in July 2011, for the first time, I had a hacker use one of my websites as a phishing site.