Secure Mobile and Autonomous Systems:

Wireless Communication Security

Low-Level Security for Radio Chips.

AndSus – stock.adobe.com


Wireless communications have become ubiquitous in the last 20 years, and play a fundamental role for technology such as the Internet of Things (e.g., Zigbee, Bluetooth, LoRaWAN, 4G and 5G). In spite of this recognized importance, physical-layer security aspects of wireless communications are often overlooked, and require expert knowledge in the areas of wireless engineering and cybersecurity.


Low-Level Security for Radio Chips. The Physical Layer in wireless communications is commonly implemented by firmware of radio chips for performance reasons. That means that securityrelevant aspects of communications such as signal and message manipulations, wormhole and relay attacks, and jamming cannot be directly observed by the user. In our work, we investigate both feasibility of related attacks, and countermeasures to detect such attacks. We leverage lowlevel reverse-engineering and instrumentation of APIs and radio firmware to achieve that goal.