A system is disclosed that generates a network attack within a simulated network environment. The system includes a module that creates one or more attack events against network devices within the simulated network environment wherein the attack events include exploitations of published and unpublished vulnerabilities and failures of hardware and software network systems, devices, or applications within the simulated network environment. Additionally, the module executes the created attack event on the simulated network environment. In addition, the system has an interface configured for receiving metadata regarding each attack event and adding the received attack event metadata to each associated attack event.