How is the Risk Rating calculated?
Many factors contribute to the risk rating of each site. The dominant factor for most sites is the age of the domain name in which the site appears. Domain names that have never been seen in the Netcraft Web Server Survey are given a high risk rating, since many phishing sites and relatively few legitimate sites fall into this category. Other factors which can influence the risk rating include: • Any other known phishing sites in the same domain. • Whether a hostname or a numeric IP address is used in the URL. • Whether or not a port number appears in the URL. • The hosting ISP’s history with respect to phishing sites. • The hosting country’s history with respect to phishing sites. • The top level domain’s history with respect to phishing sites. • The site’s popularity with Netcraft Toolbar users.
