The present disclosure relates to a system and method for isolating applications from each other. In one arrangement, the system and method pertain to intercepting application instructions, determining if an application instruction calls for an illegal action, and preventing the illegal action from occurring if the application instruction calls for the illegal action. In some arrangements, the system and method further pertain to determining if the application instruction contains an indirect memory reference and, if so, modifying the application instruction to enable the application instruction to determine itself whether an illegal operation is to be performed.