Web Phishing has become a big threat to online applications such as financial services,it steals user identities and credentials by imitating the sites of service providers such as banks.This paper proposes a novel architecture of Phishing Web detection which gives the function modules and processing workflow,and a visual based Web page similarity detecting algorithm.Based on the image of the suspicious Web page,the algorithm first divides Web page into sub-block images from which features and relations are...