McAfee WebAdvisor, previously known as 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. A browser extension can show these ratings on hyperlinks such as on web search results.
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.
Prior to mid-October 2014, the functionality of SiteAdvisor could be accessed by submitting a URL to the website at https://www.siteadvisor.com/sites/, but can now also be accessed through a downloadable Browser Plugin.
Sites are rated in levels of Safe (green tick), Suspicious (yellow exclamation mark) and Unsafe (red "X").
Additional features include:
McAfee WebAdvisor is available as a free download on McAfee's website as well as bundled with McAfee Antivirus Plus, McAfee Internet Security, McAfee Total Protection, McAfee McAfee+ Premium, McAfee+ Advanced, McAfee+ Ultimate, and McAfee Business Protection.
McAfee WebAdvisor makes use of the TrustedSource website reputation organisation, to act as something like a 'cloud' intelligence software to get the most up-to-date information on websites as possible, very similar to McAfee's Active Protection (Artemis) system. The details of this system are not known.
Other features of McAfee WebAdvisor include:
In March 2006, McAfee launched a JavaScript-based quiz which has users pick between sites rated as safe and unsafe.
A flash-based memory training game called WebQuest was launched around 2007.
WebAdvisor has published various reports regarding online threats such as typosquatting, where mistyped domains may lead to sites ranging from harmless pay-per-click and domain parking sites to pornographic and malware sites.
The very nature of WebAdvisor and the long periods between site crawls mean that, even if the WebAdvisor tests were 100% accurate, a Safe rating offers no guarantee of safety. Malicious code and browser exploits often spread fast over large numbers of websites, meaning a Safe rating may not be up to date and provide a false sense of security. To resolve this, McAfee WebAdvisor now uses McAfee's AI technology to analyze site content before a website is opened.