Join Date: Oct 2013
Location: Dayton, Ohio area
I don't think Catforum is causing a Trojan - a Trojan is a software a user downloads that pretends to be one thing, but is actually harmful.
For example - someone thinks they're downloading Adobe, but it's actually a Trojan pretending to be Adobe. These can look quite legitimate and fool people easily.
It's possible you may have a virus or Trojan on your computer and it's manifesting itself onto your browser.
I just scanned Catforum on my Norton 360 - the page came up completely clear.