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Wireless covert channels promise to exfiltrate information with high bandwidth by circumventing traditional access control mechanisms. Ideally, they are only accessible by the intended recipient and---for regular system…

Networking and Internet Architecture · Computer Science 2015-05-06 Jiska Classen , Matthias Schulz , Matthias Hollick

Ultra-wideband (UWB) is a state-of-the-art technology designed for applications requiring centimeter-level localization. Its widespread adoption by smartphone manufacturer naturally raises security and privacy concerns. Successfully…

Machine Learning · Computer Science 2025-01-09 Thibaud Ardoin , Niklas Pauli , Benedikt Groß , Mahsa Kholghi , Khan Reaz , Gerhard Wunder

After 38 years of birthday Diffie-Hellman Key Exchange (DHKE), there are many proposed improvements in the DHKE protocol to encounter modern security issues. This protocol seems quite simple to be implemented, but it can be vulnerable to…

Cryptography and Security · Computer Science 2014-09-02 Mohd Anuar Mat Isa , Habibah Hashim , Jamalul-lail Ab Manan , Syed Farid Syed Adnan , Ramlan Mahmod

Great concern has arisen in the field of reversible data hiding in encrypted images (RDHEI) due to the development of cloud storage and privacy protection. RDHEI is an effective technology that can embed additional data after image…

Multimedia · Computer Science 2021-10-19 Zhaoxia Yin , Xiaomeng She , Jin Tang , Bin Luo

Modern optical mouse sensors, with their advanced precision and high responsiveness, possess an often overlooked vulnerability: they can be exploited for side-channel attacks. This paper introduces Mic-E-Mouse, the first-ever side-channel…

Cryptography and Security · Computer Science 2025-11-18 Mohamad Fakih , Rahul Dharmaji , Youssef Mahmoud , Halima Bouzidi , Mohammad Abdullah Al Faruque

Deep learning is an effective approach for performing radio frequency (RF) fingerprinting, which aims to identify the transmitter corresponding to received RF signals. However, beyond the intended receiver, malicious eavesdroppers can also…

Signal Processing · Electrical Eng. & Systems 2025-03-07 Andrew Yuan , Rajeev Sahay

This work considers unmanned aerial vehicle (UAV) networks for collecting data covertly from ground users. The full-duplex UAV intends to gather critical information from a scheduled user (SU) through wireless communication and generate…

Signal Processing · Electrical Eng. & Systems 2019-06-21 Xiaobo Zhou , Shihao Yan , Feng Shu , Riqing Chen , Jun Li

Recently, filter bank multi-carrier spread spectrum (FBMC-SS) technology has been proposed for use in ultra-wideband (UWB) communication systems. It has been noted that, due to the spectral partitioning properties of the filter banks, a UWB…

Signal Processing · Electrical Eng. & Systems 2025-12-22 Brian Nelson , Behrouz Farhang-Boroujeny

An information-theoretic confidential communication is achievable if the eavesdropper has a degraded channel compared to the legitimate receiver. In wireless channels, beamforming and artificial noise can enable such confidentiality.…

Information Theory · Computer Science 2023-12-25 Stefan Roth , Aydin Sezgin

We show that as a side effect of building code requirements, almost all commercial buildings today are vulnerable to a novel data exfiltration attack, even if they are air-gapped and secured against traditional attacks. The new attack uses…

Cryptography and Security · Computer Science 2022-06-28 Anku Adhikari , Samuel Guo , Paris Smaragdis , Marianne Winslett

Air-gapped computers are systems that are kept isolated from the Internet since they store or process sensitive information. In this paper, we introduce an optical covert channel in which an attacker can leak (or, exfiltlrate) sensitive…

Cryptography and Security · Computer Science 2020-02-05 Mordechai Guri , Dima Bykhovsky , Yuval Elovici

Unmanned aerial vehicles (UAVs) have gained much attention in recent years for both commercial and military applications. The progress in this field has gained much popularity and the research has encompassed various fields of scientific…

Robotics · Computer Science 2017-04-18 Ashutosh Singandhupe , Hung Manh La , David Feil-Seifer , Pei Huang , Linke Guo , Ming Li

Bumblebee is an innovative backscatter system that leverages productive Bluetooth Low Energy (BLE) carriers to generate ZigBee transmissions. It improves upon previous systems like FreeRider and Interscatter by eliminating restrictions on…

Signal Processing · Electrical Eng. & Systems 2023-05-18 Hao Zhao

Analogously to classical computers, quantum processors exhibit side channels that may give attackers access to potentially proprietary algorithms. We identify and exploit a previously unexplored side channel in trapped-ion quantum…

Quantum Physics · Physics 2026-03-09 Giorgio Grigolo , Dorian Schiffer , Lukas Gerster , Martin Ringbauer , Paul Erker

Mobile autonomous systems, robots, and cyber-physical systems rely on accurate positioning information. To conduct distance-measurement, two devices exchange signals and, knowing these signals propagate at the speed of light, the time of…

Cryptography and Security · Computer Science 2019-11-26 Mridula Singh , Patrick Leu , AbdelRahman Abdou , Srdjan Capkun

Unmanned aerial vehicles (UAVs) and Terahertz (THz) technology are envisioned to play paramount roles in next-generation wireless communications. In this paper, we present a novel secure UAV-assisted mobile relaying system operating at THz…

Information Theory · Computer Science 2022-02-09 Milad Tatar Mamaghani , Yi Hong

We propose and demonstrate an ultrasonic communication link using spatial degrees of freedom to increase data rates for deeply implantable medical devices. Low attenuation and millimeter wavelengths make ultrasound an ideal communication…

Medical Physics · Physics 2017-02-20 Max L. Wang , Amin Arbabian

Setting up a large-scale wireless sensor network is challenging, as firmware must be distributed and trust between sensor nodes and a backend needs to be established. To perform this task efficiently, we propose an approach named Box, which…

Cryptography and Security · Computer Science 2020-05-27 Martin Striegel , Florian Jakobsmeier , Yacov Matveev , Johann Heyszl , Georg Sigl

The intrinsic hardware imperfection of WiFi chipsets manifests itself in the transmitted signal, leading to a unique radiometric fingerprint. This fingerprint can be used as an additional means of authentication to enhance security. In…

Cryptography and Security · Computer Science 2020-11-30 Luis F. Abanto-Leon , Andreas Baeuml , Gek Hong , Sim , Matthias Hollick , Arash Asadi

This paper studies an unmanned aerial vehicle (UAV)-enabled wireless sensor network, in which one UAV flies in the sky to collect the data transmitted from a set of sensors via distributed beamforming. We consider the delay-sensitive…

Information Theory · Computer Science 2020-03-10 Tianxin Feng , Lifeng Xie , Jianping Yao , Jie Xu