Spatial-Domain Wireless Jamming with Reconfigurable Intelligent Surfaces
CoRR(2024)
Abstract
Today, we rely heavily on the constant availability of wireless communication
systems. As a result, wireless jamming continues to prevail as an imminent
threat: Attackers can create deliberate radio interference to overshadow
desired signals, leading to denial of service. Although the broadcast nature of
radio signal propagation makes such an attack possible in the first place, it
likewise poses a challenge for the attacker, preventing precise targeting of
single devices. In particular, the jamming signal will likely not only reach
the victim receiver but also other neighboring devices. In this work, we
introduce spatial control of wireless jamming signals, granting a new degree of
freedom to leverage for jamming attacks. Our novel strategy employs an
environment-adaptive reconfigurable intelligent surface (RIS), exploiting
multipath signal propagation to spatially focus jamming signals on particular
victim devices. We investigate this effect through extensive experimentation
and show that our approach can disable the wireless communication of a victim
device while leaving neighbouring devices unaffected. In particular, we
demonstrate complete denial-of-service of a Wi-Fi device while a second device
located at a distance as close as 5 mm remains unaffected, sustaining wireless
communication at a data rate of 60 Mbit/s. We also show that the attacker can
change the attack target on-the-fly, dynamically selecting the device to be
jammed.
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