As the landscape of time-sensitive applications gains prominence in 5G/6G communications, timeliness of information updates at network nodes has become crucial, which is popularly quantified in the literature by the age of information metric. However, as we devise policies to improve age of information of our systems, we inadvertently introduce a new vulnerability for adversaries to exploit. In this article, we comprehensively discuss the diverse threats that age-based systems are vulnerable to. We begin with discussion on densely interconnected networks that employ gossiping between nodes to expedite dissemination of dynamic information in the network, and show how the age-based nature of gossiping renders these networks uniquely susceptible to threats such as timestomping attacks, jamming attacks, and the propagation of misinformation. Later, we survey adversarial works within simpler network settings, specifically in one-hop and two-hop configurations, and delve into adversarial robustness concerning challenges posed by jamming, timestomping, and issues related to privacy leakage. We conclude this article with future directions that aim to address challenges posed by more intelligent adversaries and robustness of networks to them.
翻译:随着时间敏感型应用在5G/6G通信中重要性日益凸显,网络节点信息更新的及时性已成为关键指标,学术界普遍采用信息年龄度量对其进行量化。然而,在制定策略以改善系统信息年龄的过程中,我们无意中引入了可供攻击者利用的新型漏洞。本文全面探讨了基于年龄的系统所面临的多样化威胁。我们首先讨论采用节点间闲聊机制以加速动态信息传播的密集互连网络,揭示闲聊机制的年龄敏感性特征如何使该类网络极易遭受时间戳篡改攻击、干扰攻击及虚假信息传播等威胁。随后,我们综述了简单网络场景(特别是单跳和两跳配置)中的对抗性研究成果,并深入探讨了针对干扰攻击、时间戳篡改及隐私泄露问题的对抗鲁棒性。最后,本文展望了旨在应对更智能攻击者威胁及提升网络鲁棒性的未来研究方向。