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Long range, low power networks are rapidly gaining acceptance in the Internetof Things (IoT) due to their ability to economically support long-range sensingand control applications while providing multi-year battery life. LoRa is a keyexample of this new class of network and is being deployed at large scale inseveral countries worldwide. As these networks move out of the lab and into thereal world, they expose a large cyber-physical attack surface. Securing thesenetworks is therefore both critical and urgent. This paper highlights securityissues in LoRa and LoRaWAN that arise due to the choice of a robust but slowmodulation type in the protocol. We exploit these issues to develop a suite ofpractical attacks based around selective jamming. These attacks are conductedand evaluated using commodity hardware. The paper concludes by suggesting arange of countermeasures that can be used to mitigate the attacks.

Selective Jamming of LoRaWAN using Commodity Hardware