McAfee SiteAdvisor is a free security tool for your browser (Firefox and Internet Explorer) that tests Web sites for spyware, spam, viruses and phishing attacks and lets you know before visiting it by displaying security ratings next to Google or Yahoo search results. MacAfee SiteAdvisor now comes with new features for enhanced security.

One of the main features is its enhanced Secure Search Box. This new search box lets you search with confidence without any extra plug-ins. You can enable or disable this search box from the configuration window.

Risky site blocking is another feature that removes or blocks potentially risky sites from your ‘search box’ results with easy to use settings.

McAfee SECURE Trustmark is another new feature. Only sites that pass the McAfee SECURE program of daily testing can display the Trustmark.

Once the tool has been installed, for instance on Firefox, the user will have access the MacAfee safety rating via a small icon at the bottom of the browser. The button will turn red if the visiting site is potentially dangerous. It also displays the ratings next to Google or Yahoo search results (Red – dangerous, Yellow- Questionable, Green Passed tests and white- never tested). So we can avoid unsafe websites before enter in to the site.

Certainly MacAfee Site Advisor is a must add-on for your browser, because before visiting a suspicious web site, knowing about its behavior is very important. Whatever security precautions you have been taken; still there is a chance to an attack just by visiting or clicking on a link.

Similar service are Norton Safeweb, Browser Defender, Dr.Web Link Checker and WOT.