Based on numerous high level concerns that the cyber threat is expected to increase, as well as the already documented uses of cyber warfare, it is necessary to ensure our naval ships are hardened against such attacks. In doing so, an influence net model was designed to discover the likelihood of a successful cyber attack. However, first it was necessary to establish what the best mitigation tools are in defense of cyber attack methods. In order to do so, an expert opinion survey was designed and completed by individuals currently working in the field of network security. In combination with the expert opinion surveys and in looking at research and established security techniques it should become apparent whether or not ships are taking all the required steps to best secure themselves against an attack. Though the initial model was designed around a theoretical Naval Station Everett ship, with modification the model can be utilized for any naval asset throughout the United States and the risk for each particular U.S. asset can be evaluated. Additionally, this tool can also facilitate security funding as well as establishing a means of prioritizing the tools for protection if the network needs to be hastily re-established after an attack. Ultimately, the protection of a ship’s computer networks against cyber terrorist threats is fundamental in ensuring continued effective command and control and ultimately the security of this nation.