Physical-Layer Attacks and Their Impact on Wireless Networks: Two Case Studies

In this talk, I will discuss physical layer attacks on wireless networks, including attacks on GNSS systems, UWB ranging and cellular networks. Although these attacks differ in their goals and adversarial models, they share some commonalities - they attack the mechanisms that cannot be solely protected by cryptographic means. In particular, I will show how physical layer attacks can defeat the security of recently deployed commercial UWB ranging systems that are used in modern phones and vehicles. I will then show how these attacks can be used to deploy powerful DoS and tracking attacks on modern cellular networks. Finally, I will discuss the new research opportunities in this broad domain that emerge with the deployment of new types of networks and communication systems.