Flashproxy uses binary rewriting of Flash bytecode to interpose on such interactions, redirecting them through a JavaScript-based RPC layer to the user's browser. The major challenge in Flashproxy is in trapping and handling inter- actions between the Flash program and its execution environment, including browser interactions. By using Flashproxy, any mobile Web browser that supports JavaScript transparently inher- its the ability to access sites that contain Flash programs. To demonstrate the viability of this approach, we have designed, implemented, and evaluated Flashproxy. The spliced ac- tive content executes within a remote sandbox on the proxy, but it appears embedded in the Web page on the mobile device's browser. Our approach uses a proxy to splice active content out of Web pages and replace it with an AJAX-based remote display component. This paper explores a proxy-based approach for transparently supporting active Web content on mobile devices. Finally, active code and the plug-ins that execute it often contain security flaws, potentially exposing a user's device or private data to harm. Second, plug-ins are simply not available for many devices. First, the physical resource requirements of the browser plug-ins that execute active content may exceed the capabilities of the device. For many mobile devices, however, supporting active content is problematic. It is now common for Web sites to use active Web content, such as Flash, Silverlight, or Java applets, to support rich, interactive applications.
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