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arXiv 2102.13256cs.CRcs.LG
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基于联邦学习系统的互联和自动驾驶汽车中的网络安全威胁

Cybersecurity Threats in Connected and Automated Vehicles based Federated Learning Systems

Ryerson University(瑞尔森大学)

Ranwa Al Mallah, Godwin Badu-Marfo, Bilal Farooq

摘要:

联邦学习(FL)是一种机器学习技术,旨在跨分散的实体训练算法,保持其本地数据私有。无线移动网络允许用户与其他固定或移动用户通信。道路交通网络代表无线移动网络的基于基础设施的配置,其中互联和自动车辆(CAB)代表通信实体。在无线移动网络环境中应用FL会在移动环境中产生与传统固定网络截然不同的新威胁。这种威胁是由于无线介质的固有特性造成的,并且是由车辆网络的特性(例如,高节点移动性和快速变化的拓扑结构)引起的。大多数网络防御技术依赖于高度可靠和连接的网络。本文探讨了伪造的信息攻击,其目标是FL过程中正在进行的RSU。我们确定了恶意CAV执行的一些攻击策略,以破坏车辆网络中全局模型的训练。我们证明了攻击能够增加收敛时间并降低模型的准确性。我们证明了我们的攻击绕过FL防御策略的主要形式,并强调了在未来道路网络的无线移动环境中需要新的中毒弹性防御机制。

英文摘要:

Federated learning (FL) is a machine learning technique that aims at training an algorithm across decentralized entities holding their local data private. Wireless mobile networks allow users to communicate with other fixed or mobile users. The road traffic network represents an infrastructure-based configuration of a wireless mobile network where the Connected and Automated Vehicles (CAV) represent the communicating entities. Applying FL in a wireless mobile network setting gives rise to a new threat in the mobile environment that is very different from the traditional fixed networks. The threat is due to the intrinsic characteristics of the wireless medium and is caused by the characteristics of the vehicular networks such as high node-mobility and rapidly changing topology. Most cyber defense techniques depend on highly reliable and connected networks. This paper explores falsified information attacks, which target the FL process that is ongoing at the RSU. We identified a number of attack strategies conducted by the malicious CAVs to disrupt the training of the global model in vehicular networks. We show that the attacks were able to increase the convergence time and decrease the accuracy the model. We demonstrate that our attacks bypass FL defense strategies in their primary form and highlight the need for novel poisoning resilience defense mechanisms in the wireless mobile setting of the future road networks.

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