Ensuring integrity of a displayed web page in a client-server infrastructure including defining an enhancement for a web page markup for an enhanced web page content including a provided web page content and at least one identified provider added content as prerequisite content for the provided content, implementing a secure web browser document object model (DOM) enhancement and an enhanced document object model (DOM) processing embedding a user-requested content and the at least one corresponding prerequisite content based on the web page markup enhancement so that the requested content and the at least one prerequisite content of the enhanced web page content of an enhanced web page are secured and displayed as entity.