Hacked Sites, How Many Recently?

[seriousrat]

Have you seen the redirect worm that is in the seriousoffshore.com/forums before (if you've looked)? They did get in through the install as you said, but then they created admin users, modified files in the admincp folder, the style templates, and the plugins. The admincp and database hacks are pretty severe. Plus, because of the delay for when it went active, our backups are infected. As our webmaster says, Every time he thinks he has everything, something else pops up.

Anyway, if anyone is familiar with the pain of this one, helpful hints are certainly appreciated.

Thanks for the input so far.