The McAfee SiteAdvisor, later renamed as the McAfee WebAdvisor, 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. It is badly known for hijacking user's browser and changing default search engines and messing up the browser.