I edited your link so our users do not click on it by mistake. In the future , please don't put the full URL to malicious sites in the forum.
Norton Safe Web shows that site as a security risk.
http://safeweb.norton.com/report/show?url=antimalware-updates.is.com
You might consider adding our Norton Safe Web Lite add-on to your browser(s). Norton Safe Web Lite provides a safer search experience by warning you of dangerous Web sites right in your search results, so you can search, browse, and shop online without worry.
http://safeweb.norton.com/lite
Thanks,
Thomas