Is there a security hole that allows someone to change the main page of the forum? One of my sites was hacked and the service provider claims it is a hole in Snitz. The actual page was changes. They created every possible homepage file. default.html defulat htm index.html index.htm etc.
Never remember any security holes that would allow the creation of new files on the server, though.
Search is your friend “I was having a mildly paranoid day, mostly due to the fact that the mad priest lady from over the river had taken to nailing weasels to my front door again.”
That looks like a server security issue. Forum security problems allowed the exploiters to have forum control, nothing else. There was a security issue arising from FP extensions, that allowed for home page "defacing". Maybe that's what happened with your site.