When you access cycling360media.com via the link here, it's taking me first to a site called viglink.com then to the site, and that's why it was marked by MS essentials as potential malware..... Just checked it in linux. And it's not the first time people in here have encountered the problem when clicking on links from bikeforums.net

http://www.bikeforums.net/showthread...sers-as-unsafe