Activate McAfee Site Advisor live is a simple Windows tool that advises you about every website you visit. The program installs a plugin into the browser, which provides simple red, yellow, and green website safety ratings, just like the traffic light system. McAfee SiteAdvisor Live is much more useful than providing a safe searching and browsing environment by providing an active, real-time, comprehensive protection from sites that can harm your PC. Its automatic updates help protect you from even the latest threats.