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Acoustic Side-Channel Attacks (ASCAs) extract sensitive information by using audio emitted from a computing devices and their peripherals. Attacks targeting keyboards are popular and have been explored in the literature. However, similar…

Cryptography and Security · Computer Science 2025-05-06 Mauro Conti , Marin Duroyon , Gabriele Orazi , Gene Tsudik

Most electronic devices utilize mechanical keyboards to receive inputs, including sensitive information such as authentication credentials, personal and private data, emails, plans, etc. However, these systems are susceptible to acoustic…

Cryptography and Security · Computer Science 2023-09-26 Alireza Taheritajar , Zahra Mahmoudpour Harris , Reza Rahaeimehr

We present the first acoustic side-channel attack that recovers what users type on the virtual keyboard of their touch-screen smartphone or tablet. When a user taps the screen with a finger, the tap generates a sound wave that propagates on…

Cryptography and Security · Computer Science 2019-03-28 Ilia Shumailov , Laurent Simon , Jeff Yan , Ross Anderson

We report the first active acoustic side-channel attack. Speakers are used to emit human inaudible acoustic signals and the echo is recorded via microphones, turning the acoustic system of a smart phone into a sonar system. The echo signal…

Cryptography and Security · Computer Science 2018-08-31 Peng Cheng , Ibrahim Ethem Bagci , Utz Roedig , Jeff Yan

In this paper, we present an acoustic side channel attack which makes use of smartphone microphones recording a robot in operation to exploit acoustic properties of the sound to fingerprint a robot's movements. In this work we consider the…

Cryptography and Security · Computer Science 2022-09-22 Ryan Shah , Mujeeb Ahmed , Shishir Nagaraja

With recent developments in deep learning, the ubiquity of micro-phones and the rise in online services via personal devices, acoustic side channel attacks present a greater threat to keyboards than ever. This paper presents a practical…

Cryptography and Security · Computer Science 2023-08-03 Joshua Harrison , Ehsan Toreini , Maryam Mehrnezhad

Acoustic side-channel attacks on keyboards can bypass security measures in many systems that use keyboards as one of the input devices. These attacks aim to reveal users' sensitive information by targeting the sounds made by their keyboards…

Cryptography and Security · Computer Science 2024-03-14 Alireza Taheritajar , Reza Rahaeimehr

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

Spoken content, such as online videos and podcasts, often spans multiple topics, which makes automatic topic segmentation essential for user navigation and downstream applications. However, current methods do not fully leverage acoustic…

Computation and Language · Computer Science 2026-02-09 Steffen Freisinger , Philipp Seeberger , Tobias Bocklet , Korbinian Riedhammer

The widespread use of smart devices gives rise to both security and privacy concerns. Fingerprinting smart devices can assist in authenticating physical devices, but it can also jeopardize privacy by allowing remote identification without…

Cryptography and Security · Computer Science 2014-03-14 Anupam Das , Nikita Borisov , Matthew Caesar

It is known that malware can leak data from isolated, air-gapped computers to nearby smartphones using ultrasonic waves. However, this covert channel requires access to the smartphone's microphone, which is highly protected in Android OS…

Cryptography and Security · Computer Science 2022-08-23 Mordechai Guri

Imagine being able to listen to the birds chirping in a park without hearing the chatter from other hikers, or being able to block out traffic noise on a busy street while still being able to hear emergency sirens and car honks. We…

Sound · Computer Science 2023-11-02 Bandhav Veluri , Malek Itani , Justin Chan , Takuya Yoshioka , Shyamnath Gollakota

Interstitial content is online content which grays out, or otherwise obscures the main page content. In this technical report, we discuss exploratory research into detecting the presence of interstitial content in web pages. We discuss the…

Computers and Society · Computer Science 2017-08-17 Elizabeth Lucas

Air-gapped computers are disconnected from the Internet physically and logically. This measure is taken in order to prevent the leakage of sensitive data from secured networks. In the past, it has been shown that malware can exfiltrate data…

Cryptography and Security · Computer Science 2016-08-12 Mordechai Guri , Yosef Solewicz , Andrey Daidakulov , Yuval Elovici

We present a new method to capture the acoustic characteristics of real-world rooms using commodity devices, and use the captured characteristics to generate similar sounding sources with virtual models. Given the captured audio and an…

Sound · Computer Science 2021-09-28 Zhenyu Tang , Nicholas J. Bryan , Dingzeyu Li , Timothy R. Langlois , Dinesh Manocha

The availability of digital devices operated by voice is expanding rapidly. However, the applications of voice interfaces are still restricted. For example, speaking in public places becomes an annoyance to the surrounding people, and…

Human-Computer Interaction · Computer Science 2023-03-06 Naoki Kimura , Michinari Kono , Jun Rekimoto

Adversarial attacks pose a threat to deep learning models. However, research on adversarial detection methods, especially in the multi-modal domain, is very limited. In this work, we propose an efficient and straightforward detection method…

Computer Vision and Pattern Recognition · Computer Science 2021-02-15 Pingchuan Ma , Stavros Petridis , Maja Pantic

Voice assistants are now ubiquitous and listen in on our everyday lives. Ever since they became commercially available, privacy advocates worried that the data they collect can be abused: might private conversations be extracted by third…

Cryptography and Security · Computer Science 2020-12-02 Almos Zarandy , Ilia Shumailov , Ross Anderson

Our research discovers how the rolling shutter and movable lens structures widely found in smartphone cameras modulate structure-borne sounds onto camera images, creating a point-of-view (POV) optical-acoustic side channel for acoustic…

Cryptography and Security · Computer Science 2023-09-13 Yan Long , Pirouz Naghavi , Blas Kojusner , Kevin Butler , Sara Rampazzi , Kevin Fu

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
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