EDJam: Effective Dynamic Jamming against IEEE 802.15.4-Compliant Wireless Personal Area Networks

With the development of various wireless personal area networks (WPANs), the issue of security has become a crucial problem for their applications. Jamming is one of the most important methods of attack to deprive or reduce the communication service of WPANs. Most existing jamming attacks can cause negative interference, but the attack strategies are usually not adjusted against the countermeasures that are currently taken. This paper proposes an effective dynamic jamming attack (EDJam) in an 802.15.4-compliant WPAN. In this attack, a jammer who is aware of a change in the network defense strategy, e.g. the use of a dynamic retransmission mechanism, may choose a better strategy to make more damage to the network with less cost. Similarly, a well-protected network can change its defense strategy against the EDJam. This procedure of competition between the EDJam attacker and defending networks is modeled and formulated as a Stackelberg game, and a unique Nash Equilibrium point is derived in analytical format. Based on an equilibrium analysis, we discuss the condition under which a defense strategy will increase the utility of the network and a dynamic retransmission mechanism defense strategy is proposed accordingly. The simulation results show that EDjam can be more cost-efficient than continuous, random and fixed-period jamming.