Allianz have made reference to the lack of Cyber protection as a major concern in their annual review of the state of the maritime insurance industry:
"Dependence on e-navigation, the interconnectivity of the maritime sector, the current low levels of cyber security awareness and – longer term – the prospect of unmanned ships, means ships and ports could become enticing targets for hackers in future. A cyber-attack could result in a total loss, leading to substantial insurance claims for hull, cargo and protection & indemnity underwriters. It could even involve multiple vessels from the same company. Companies must simulate potential scenarios and identify appropriate mitigation strategies."
Source: Safety and Shipping Review 2015 (PDF)