I would like to mention however that vBulletin 5 (the software which may have led to this hack) is not like the older versions, and is quite likely filled with

I would like to mention however that vBulletin 5 (the software which may have led to this hack) is not like the older versions, and is quite likely filled with security holes and problems that most scripts won't have. The fact two sites using it were hacked just means the script itself wasn't particularly well written or maintained, not that an internet wide epidemic is just around the corner.