A method and system to verify active content at a server system include receiving, at the server system a communication (e.g., an e-mail message or e-commerce listing) that includes active content that is to be made accessible via the server system. At the server system, the active content is rendered to generate rendered active content. The rendered active content presents a representation of information and processes to which an end user will be subject. At the server system, the rendered active content is verified as not being malicious.