Security aspects in underwater wireless networks have not been widely investigated so far, despite the critical importance of the scenarios in which these networks can be employed. For example, an attack to a military underwater network for enemy targeting or identification can lead to serious consequences. Similarly, environmental monitoring applications such as tsunami prevention are also critical from a public safety point of view. In this work, we assess a scenario in which a malicious node tries to perform a jamming attack, degrading the communication quality of battery-powered underwater nodes. The legitimate transmitter may use packet level coding to increase the chances of correctly delivering packets. Because of the energy limitation of the nodes, the jammer's objective is twofold: disrupting the communication and reducing the lifetime of the victim by making it send more redundancy. We model the jammer and the transmitter as players in a multistage game, deriving the optimal strategies. We evaluate the performance in a model-based scenario and using real experimental data, performing a sensitivity analysis to evaluate the performance of the strategies if the real channel model is different from the one they use.

翻译：迄今为止,水下无线网络的安全方面尚未受到广泛调查,尽管使用这些网络的情景至关重要。例如,攻击军事水下网络以瞄准敌人或识别敌人可能导致严重后果。同样,预防海啸等环境监测应用从公共安全角度也至关重要。在这项工作中,我们评估了恶意节点试图进行干扰袭击、降低电池驱动水下节点的通信质量的情景。合法的发射机可能使用包级编码来增加正确发送包包的机会。由于节点的能源限制,干扰器的目标具有双重性:干扰通信,通过让受害者更多冗余来缩短其寿命。我们把干扰器和发射机模拟成多阶段游戏的玩家,并形成最佳战略。我们评估模型情景中的性能,使用真正的实验数据,进行敏感度分析,以评价战略的性能,如果真正的频道模型不同于他们所使用的模式。