Operation of radar equipment is one of the key facilities used by navigators to gather situational awareness about their surroundings. With an ever increasing need for always-running logistics and tighter shipping schedules, operators are relying more and more on computerized instruments and their indications. As a result, modern ships have become a complex cyber-physical system in which sensors and computers constantly communicate and coordinate. In this work, we discuss novel threats related to the radar system, which is one of the most security-sensitive component on a ship. In detail, we first discuss some new attacks capable of compromising the integrity of data displayed on a radar system, with potentially catastrophic impacts on the crew' situational awareness or even safety itself. Then, we present a detection system aimed at highlighting anomalies in the radar video feed, requiring no modifications to the target ship configuration. Finally, we stimulate our detection system by performing the attacks inside of a simulated environment. The experimental results clearly indicate that the attacks are feasible, rather easy to carry out, and hard-to-detect. Moreover, they prove that the proposed detection technique is effective.

翻译：雷达设备的操作是导航人员用来收集对其周围环境情况认识的关键设施之一。随着对始终不断的物流和更加严格的航运时间表的需求不断增加,操作人员越来越依赖计算机化仪器及其信号。因此,现代船舶已经成为一个复杂的网络物理系统,传感器和计算机不断在其中通信和协调。在这项工作中,我们讨论了与雷达系统有关的新威胁,这是船舶上最安全敏感的组成部分之一。我们首先详细讨论一些能够损害雷达系统所显示数据完整性的新攻击,可能对船员的情况认识甚至安全本身产生灾难性影响。然后,我们提出了一个探测系统,目的是突出雷达视频中的异常现象,不需要修改目标船只的配置。最后,我们通过在模拟环境中进行攻击来刺激我们的探测系统。实验结果清楚地表明,这些攻击是可行的,很容易执行,而且难以探测。此外,它们证明拟议的探测技术是有效的。