Sysoon is on SiteAdvisor from McAfee
SiteAdvisor is a service that reports on the safety of web sites by crawling the web and testing the sites it finds for malware and spam. The service was originally developed by SiteAdvisor, Inc, an MIT startup first introduced at CodeCon on February 10, 2006 and later acquired by McAfee on April 5, 2006. Since its founding, it has received criticism for its improper rating of some sites, and more importantly the length of time it takes to resolve complaints. McAfee's own materials indicate that it takes ten days to address an incorrect site rating. Further, through their agreement with Yahoo, updates to Yahoo search results do not occur for up to four weeks after the site rating change (according to McAfee email).