A dynamic and heterogeneous web application to defense webshell attacks by using diversified PHP code

Malicious code injection attacks often bypass rules based filtering methods by various deformable methods. Based on the PHP web application environment, we proposed a method of using code diversification, and then defended the PHP webshell attack threat by constructing a dynamic and heterogeneous PHP web application which uses the redundancy adjudication and dynamic transformation method. Finally, this method is verified in cloud service environment.