Rui Xiao (Zhejiang University), Xiankai Chen (Zhejiang University), Yinghui He (Nanyang Technological University), Jun Han (KAIST), Jinsong Han (Zhejiang University)

In recent years, the proliferation of WiFi-connected devices and related research has led to novel techniques of utilizing WiFi as sensors, i.e., capturing human movements through channel state information (CSI) perturbations. While this enables passive occupant sensing, it also introduces privacy risks from textit{leaked WiFi signals} that attackers can intercept, leading to threats like textit{occupancy detection}, critical in scenarios such as burglaries or stalking. We propose LeakyBeam, a novel and improved textit{occupancy detection attack} that leverages a new side channel from WiFi CSI, namely beamforming feedback information (BFI). BFI retains victim's movement information, even when transmitted through walls, and is easily captured since BFI packets are unencrypted, making them a rich source of privacy-sensitive information. Furthermore, we also introduce a defense mechanism that obfuscates BFI packets, requiring minimal hardware changes. We demonstrate LeakyBeam's effectiveness through a comprehensive real-world evaluation at a distance of 20 meters, achieving true positive and negative rates of 82.7% and 96.7%, respectively.

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VoiceRadar: Voice Deepfake Detection using Micro-Frequency and Compositional Analysis

Kavita Kumari (Technical University of Darmstadt), Maryam Abbasihafshejani (University of Texas at San Antonio), Alessandro Pegoraro (Technical University of Darmstadt), Phillip Rieger (Technical University of Darmstadt), Kamyar Arshi (Technical University of Darmstadt), Murtuza Jadliwala (University of Texas at San Antonio), Ahmad-Reza Sadeghi (Technical University of Darmstadt)

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A Comprehensive Memory Safety Analysis of Bootloaders

Jianqiang Wang (CISPA Helmholtz Center for Information Security), Meng Wang (CISPA Helmholtz Center for Information Security), Qinying Wang (Zhejiang University), Nils Langius (Leibniz Universität Hannover), Li Shi (ETH Zurich), Ali Abbasi (CISPA Helmholtz Center for Information Security), Thorsten Holz (CISPA Helmholtz Center for Information Security)

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NDSS Symposium 2025 Welcome and Opening Remarks

General Chairs: David Balenson, USC Information Sciences Institute and Heng Yin, University of California, Riverside Program Chairs: Christina Pöpper, New York University Abu Dhabi and Hamed Okhravi, MIT Lincoln Laboratory Artifact Evaluation Chairs: Daniele Cono D’Elia, Sapienza University and Mathy Vanhoef, KU Leuven

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Privacy-Enhancing Technologies Against Physical-Layer and Link-Layer Device Tracking: Trends,...

Apolline Zehner (Universite libre de Bruxelles), Iness Ben Guirat (Universite libre de Bruxelles), Jan Tobias Muhlberg (Universite libre de Bruxelles)

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