SurfWebSafely gets data from the four leading services. You can absolutely trust our rating system.
McAffee SiteAdvisor is one of the leading safety services provided by McAffee (security software company). SiteAdvisor stores safety information about millions of websites.
Google is also providing a service named Safe Browsing. It checks the web pages for suspected phishing and malware scripts.
AVG ThreatLabs is another great service to check websites safety. It's held by one of the top anrivirus company AVG Technologies.
Child Safety Rating and Web Of Trust Rating are provided by WOT Services company. Its ratings are mostly based on data collected from users and they also collect data provided by other web reputation services.