It is the other items that are on the page that have been compromised, I got 10 alerts (image1) basically on the stuff in the image on Reply #2.
They all have identical content, two very long (rows) strings of obfuscated script (image2) and loading various dubious keygen and software sales sites, etc. etc.
I have broken down the two lines to make it easier to see what that content is, image3.
So it looks very like the site has been hacked.