Originally posted by boscibo
If you are using Internet Explorer, try this: Open the browser, go to "tools" then "Internet Options" and hit the "advanced" tab. Scroll down to where it says "Enable install on demand" and uncheck those boxes. The next time a spyware tries to download from a website, you will get a pop-up box asking you if you want to allow the download. Otherwise, with those boxes checked anything can download without your permission - I don't know why Microsoft has those boxes unchecked by default, it's really stupid.
Thanks!