Approved for public release, distribution is unlimited / The existing INFOCON system is an information warning system that the DOD maintains. It is not formally correlated to other warning systems, such as DEFCON, FPCON/THREATCON, WATCHCONs, SANS INFOCON, or the Homeland Security Advisory System Threat condition. The criteria for each INFOCON level are subjective. The INFOCON recommended actions are a mix of policy and general technical measures. The INFOCON system vaguely follows the Defense in Depth network defense methodology. This thesis examines the foundations for the existing INFOCON system and presents an evolved INFOCON system. The focus will be on the security of the DOD information infrastructure and the accomplishment of the mission, as well as the usability and the standardization of the INFOCON warning system. The end result is a prototype that is a set of predefined escalation scripts for the evolved INFOCON system's safeguard measures. / Civilian, Federal Cyber Service Corps, Naval Postgraduate School