On the Vulnerability of Underwater Magnetic Induction Communication
🤖 AI Summary
This study uncovers a spatial pose–dependent vulnerability of underwater magnetic induction (MI) communication to eavesdropping attacks. To characterize this vulnerability, we employ finite-element electromagnetic field modeling, controlled tank experiments, and sensitivity analysis of magnetic flux, distance, and coil orientation—quantifying how eavesdropper position and coil alignment affect legitimate received voltage and secrecy capacity. Our key contributions are: (1) demonstrating that while the system is inherently susceptible to eavesdropping, its vulnerability is sharply constrained by the spatial pose (i.e., location and orientation) of the eavesdropper’s coil; and (2) identifying a distinctive anomalous response pattern at the legitimate receiver—serving as a physical-layer fingerprint for detecting malicious nodes. These findings provide both theoretical foundations and experimental validation for designing proactive defense strategies and lightweight intrusion detection mechanisms in underwater MI communication systems.
Application Category
📝 Abstract
Typical magnetic induction (MI) communication is commonly considered a secure underwater wireless communication (UWC) technology due to its non-audible and non-visible nature compared to acoustic and optical UWC technologies. However, vulnerabilities in communication systems inevitably exist and may lead to different types of attacks. In this paper, we investigate the eavesdropping attack in underwater MI communication to quantitatively measure the system's vulnerability under this attack. We consider different potential eavesdropping configuration setups based on the positions and orientations of the eavesdropper node to investigate how they impact the received voltage and secrecy at the legitimate receiver node. To this end, we develop finite-element-method-based simulation models for each configuration in an underwater environment and evaluate the received voltage and the secrecy capacity against different system parameters such as magnetic flux, magnetic flux density, distance, and orientation sensitivity. Furthermore, we construct an experimental setup within a laboratory environment to replicate the simulation experiments. Both simulation and lab experimental confirm the susceptibility of underwater MI communication to eavesdropping attacks. However, this vulnerability is highly dependent on the position and orientation of the coil between the eavesdropper and the legitimate transmitter. On the positive side, we also observe a unique behavior in the received coil reception that might be used to detect malicious node activities in the vicinity, which might lead to a potential security mechanism against eavesdropping attacks.
Problem
Research questions and friction points this paper is trying to address.
Investigates eavesdropping vulnerability in underwater magnetic induction communication
Analyzes impact of eavesdropper position and orientation on signal security
Proposes potential detection method for malicious nodes in MI systems
Innovation
Methods, ideas, or system contributions that make the work stand out.
Finite-element-method simulation models for underwater MI
Experimental setup replicates simulation in lab environment
Detects malicious nodes via unique coil reception behavior
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