In search engines

some malicious pages are hidden in search results athigh rank position.In this paper

an improved Hits algorithm-based web security model is proposed.The vector space model is used to evaluate the risk of the web pages.The malicious pages are punished to reduce the rank position in the search results.The probability of the malicious pages to be accessed is reduced.The experimental results show that the Authority value of a malicious web page is reduced and Authority value of the non-malicious web is increased in this model.Therefore

the probability that the malicious web pages are clicked is reduced.