Metasurface-in-the-Middle Attacks: Wavefront Manipulation Threats and Countermeasures

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dc.contributor.advisorKnightly, Edward
dc.creatorShaikhanov, Zhambyl
dc.date.accessioned2024-05-21T21:10:44Z
dc.date.available2024-05-21T21:10:44Z
dc.date.created2024-05
dc.date.issued2024-04-18
dc.date.submittedMay 2024
dc.date.updated2024-05-21T21:10:44Z
dc.description.abstractTranscending the capabilities of traditional devices, metasurfaces offer nearly limitless control of the EM properties of wireless signals and have recently been shown to facilitate wireless communication with unique designs. However, in this thesis, I explore the security threats posed by malicious metasurfaces and demonstrate that, along with new opportunities, they bring forth unprecedented security challenges. In particular, I expose a new class of “MetaSurface-in-the-Middle” attacks, wherein malicious agent, Eve, can intercept pencil-beam directional links - conventionally believed to be immune from eavesdropping - with an almost imperceptible trace. By exploring the foundation of the attack in WLAN scenarios, I demonstrate that such malicious metasurfaces could be fabricated in under 5 minutes and at the cost of several cents. Furthermore, I study the attack with wireless backhaul links, which are crucial for many functions like low-latency financial trading on Wall Street. I show how Eve designs and employs MetaFly to covertly manipulate the EM wavefront on highly directional backhaul links, secretly inducing eavesdropping diffraction beams. I implement and demonstrate these attacks in both large indoor and outdoor rooftops in a metropolitan area, showcasing how Eve can intercept transmissions with nearly zero bit error rate while maintaining minimal impact on legitimate communication.
dc.format.mimetypeapplication/pdf
dc.identifier.citationShaikhanov, Zhambyl. Metasurface-in-the-Middle Attacks: Wavefront Manipulation Threats and Countermeasures. (2024). PhD diss., Rice University. https://hdl.handle.net/1911/116097
dc.identifier.urihttps://hdl.handle.net/1911/116097
dc.language.isoeng
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.subjectWireless Security
dc.subjectMetasurface
dc.subjectDrones
dc.subjectWireless Backhaul Links
dc.titleMetasurface-in-the-Middle Attacks: Wavefront Manipulation Threats and Countermeasures
dc.typeThesis
dc.type.materialText
thesis.degree.departmentElectrical and Computer Engineering
thesis.degree.disciplineEngineering
thesis.degree.grantorRice University
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy
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