Optimizing for Web security based on search engine

With the emergences and rapid development of the search engines, people can find the vast amount of information from the internet with the fast speed. Now how to find the safe and valuable pages in the ocean of information is an important issue that the search engines have to face where the Trojan is raging in today's network. In this paper with the improvement of the PageRank algorithm and the introduction programs of the security assessment, people will reduces the probability of the secure site when they achieve search engine.