ShieldScatter: Improving IoT Security with Backscatter Assistance
Zhiqing Luo, Wei Wang, Jun Qu, Tao Jiang, Qian Zhang

TL;DR
ShieldScatter is a lightweight IoT security system that uses battery-free backscatter tags to create physical-layer signatures, effectively detecting active attacks with minimal energy and hardware costs.
Contribution
It introduces a novel backscatter-assisted approach to enhance IoT security without requiring complex hardware or high energy consumption.
Findings
Mitigates 97% of spoofing attacks with three backscatter tags
Triggers false alarms on only 7% of legitimate traffic
Effective even when attacker is 15 cm away
Abstract
The lightweight protocols and low-power radio technologies open up many opportunities to facilitate Internet-of-Things (IoT) into our daily life, while their minimalist design also makes IoT devices vulnerable to many active attacks due to the lack of sophisticated security protocols. Recent advances advocate the use of an antenna array to extract fine-grained physical-layer signatures to mitigate these active attacks. However, it adds burdens in terms of energy consumption and hardware cost that IoT devices cannot afford. To overcome this predicament, we present ShieldScatter, a lightweight system that attaches battery-free backscatter tags to single-antenna devices to shield the system from active attacks. The key insight of ShieldScatter is to intentionally create multi-path propagation signatures with the careful deployment of backscatter tags. These signatures can be used to…
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Taxonomy
TopicsEnergy Harvesting in Wireless Networks · Opportunistic and Delay-Tolerant Networks · Wireless Communication Security Techniques
