Recently somebody told me they recieved a virus (trojan) while on my site I had a look at the coding on my index page and noticed there was a script which I did not install so deleted and all was fine but now it has re-appeared. Is someone 'hacking' into my site?
(I haven't put my URL on as I don't want anyone to get a virus!!!)
You didn't tell us what host you are using. But if, as suggested, it is a "free" host, it is almost certainly paid for by advertising. There is an obnoxious ad for some kind of security software that flashes a bogus virus alert at you. Do the people who warned you know what they are talking about? (Just one possibility, don't count on it being right)