14. A method of detecting a malicious URL, said method comprising: retrieving HTML code representing a parent Web page; scanning said HTML code and identifying at least one embedded URL of said HTML code; retrieving the content of a child Web page identified by said embedded URL; determining relevancy features representing the relevancy between said HTML code and said retrieved content; producing a numerical relevancy vector indicating said relevancy features; inputting said numerical relevancy vector into a classifier algorithm; and outputting a score from said classifier algorithm indicating the likelihood that said embedded URL of said HTML code is a malicious URL.
14. A method of detecting a malicious URL, said method comprising: retrieving HTML code representing a parent Web page; scanning said HTML code and identifying at least one embedded URL of said HTML code; retrieving the content of a child Web page identified by said embedded URL; determining relevancy features representing the relevancy between said HTML code and said retrieved content; producing a numerical relevancy vector indicating said relevancy features; inputting said numerical relevancy vector into a classifier algorithm; and outputting a score from said classifier algorithm indicating the likelihood that said embedded URL of said HTML code is a malicious URL. 16. A method as recited in claim 14 determining said relevancy features by comparing a category of said HTML code to a category of said retrieved content.