Novel Denial-of-Service Attacks Against LoRaWAN on MAC Layer

LoRaWAN is widely used in Internet of Things (IoT) applications such as traffic management by providing a long-range wireless network at low energy consumption. However, the Aloha MAC protocol and the duty-cycle limitation bring LoRaWAN the challenge of Denial-of-Service (DoS) attacks. This study focuses on this security issue. Two DoS attacks that aim at the confirmed transmission are proposed by investigating the Medium Access Control (MAC) layer of LoRaWAN. Simulation results show that the proposed methods significantly reduce the packet success rate and network energy efficiency with fewer attackers than the baseline attack, demonstrating the harmfulness of the proposed approaches.