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In a radiation emergency, every second counts, yet the public rarely has immediate access to dedicated monitoring devices when they are needed most. Here, the first practical mobile phone-based emergency ionizing radiation detection method…

Applied Physics · Physics 2025-08-13 Yanfeng Xie , Xingzhi Cheng

Side-channel vulnerabilities pose an increasing threat to cryptographically protected devices. Consequently, it is crucial to observe information leakages through physical parameters such as power consumption and electromagnetic (EM)…

Cryptography and Security · Computer Science 2025-03-18 Nilupulee A Gunathilake , Owen Lo , William J Buchanan , Ahmed Al-Dubai

We propose adversarial embedding, a new steganography and watermarking technique that embeds secret information within images. The key idea of our method is to use deep neural networks for image classification and adversarial attacks to…

Cryptography and Security · Computer Science 2019-12-04 Salah Ghamizi , Maxime Cordy , Mike Papadakis , Yves Le Traon

To cope with the increasing variability and sophistication of modern attacks, machine learning has been widely adopted as a statistically-sound tool for malware detection. However, its security against well-crafted attacks has not only been…

Cryptography and Security · Computer Science 2017-05-01 Ambra Demontis , Marco Melis , Battista Biggio , Davide Maiorca , Daniel Arp , Konrad Rieck , Igino Corona , Giorgio Giacinto , Fabio Roli

Steganography refers to the art of concealing secret messages within multiple media carriers so that an eavesdropper is unable to detect the presence and content of the hidden messages. In this paper, we firstly propose a novel…

Cryptography and Security · Computer Science 2019-06-05 Zheng Li , Ge Han , Yunqing Wei , Shanqing Guo

With the development in the field of smartphones and ever growing base of Internet, various softwares are left prone to many malicious activities like pharming, phishing, ransomware, spam, spoofing, spyware, eavesdropping, etc. These…

Cryptography and Security · Computer Science 2019-12-30 Soumya Sourav , Devashish Khulbe , Naman Kapoor

The paper introduces a novel, holistic approach for robust Screen-Camera Communication (SCC), where video content on a screen is visually encoded in a human-imperceptible fashion and decoded by a camera capturing images of such screen…

Computer Vision and Pattern Recognition · Computer Science 2021-05-13 Vu Tran , Gihan Jayatilaka , Ashwin Ashok , Archan Misra

Whereas cryptography easily arouses attacks by means of encrypting a secret message into a suspicious form, steganography is advantageous for its resilience to attacks by concealing the message in an innocent-looking cover signal. Minimal…

Cryptography and Security · Computer Science 2022-10-27 Kejiang Chen , Hang Zhou , Yaofei Wang , Menghan Li , Weiming Zhang , Nenghai Yu

Non-malleable codes are randomized codes that protect coded messages against modification by functions in a tampering function class. These codes are motivated by providing tamper resilience in applications where a cryptographic secret is…

Cryptography and Security · Computer Science 2017-08-21 Fuchun Lin , Reihaneh Safavi-Naini , Mahdi Cheraghchi , Huaxiong Wang

Side-channel analysis (SCA) poses a real-world threat by exploiting unintentional physical signals to extract secret information from secure devices. Evaluation labs also use the same techniques to certify device security. In recent years,…

Cryptography and Security · Computer Science 2025-11-21 Sengim Karayalçin , Marina Krček , Stjepan Picek

Cryptography is vital for data security, but cryptographic algorithms can still be vulnerable to side-channel attacks (SCAs), physical assaults exploiting power consumption and EM radiation. SCAs pose a significant threat to cryptographic…

Cryptography and Security · Computer Science 2024-02-16 Muhammad Rusyaidi Zunaidi , Asanka Sayakkara , Mark Scanlon

Many mobile apps are inaccessible, thereby excluding people from their potential benefits. Existing rule-based accessibility checkers aim to mitigate these failures by identifying errors early during development but are constrained in the…

Human-Computer Interaction · Computer Science 2025-04-04 Mingyuan Zhong , Ruolin Chen , Xia Chen , James Fogarty , Jacob O. Wobbrock

Semantic communication systems, which leverage Generative AI (GAI) to transmit semantic meaning rather than raw data, are poised to revolutionize modern communications. However, they are vulnerable to backdoor attacks, a type of poisoning…

Cryptography and Security · Computer Science 2025-02-07 Ziyang Wei , Yili Jiang , Jiaqi Huang , Fangtian Zhong , Sohan Gyawali

LoRa provides long-range, energy-efficient communications in Internet of Things (IoT) applications that rely on Low-Power Wide-Area Network (LPWAN) capabilities. Despite these merits, concerns persist regarding the security of LoRa…

Networking and Internet Architecture · Computer Science 2024-12-31 Yalin E. Sagduyu , Tugba Erpek

ECG biometrics offer a unique, secure authentication method, yet their deployment on wearable devices faces real-time processing, privacy, and spoofing vulnerability challenges. This paper proposes a lightweight deep learning model…

Cryptography and Security · Computer Science 2025-09-26 Dilli Hang Rai , Sabin Kafley

Deep neural networks have demonstrated remarkable effectiveness across a wide range of tasks such as semantic segmentation. Nevertheless, these networks are vulnerable to adversarial attacks that add imperceptible perturbations to the input…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Kira Maag , Roman Resner , Asja Fischer

Smartphone motion sensors provide a concealed mechanism for eavesdropping on acoustic information, like touchtones, emitted by a device. Eavesdropping on touchtones exposes credit card information, banking pins, and social security card…

Cryptography and Security · Computer Science 2021-09-29 Connor Bolton , Yan Long , Jun Han , Josiah Hester , Kevin Fu

Resonant transmission of light is a surface-wave assisted phenomenon that enables funneling light through subwavelength apertures milled in otherwise opaque metallic screens. In this work, we introduce a deep learning approach to…

Malicious server (MS) attacks have enabled the scaling of data stealing in federated learning to large batch sizes and secure aggregation, settings previously considered private. However, many concerns regarding the client-side…

Cryptography and Security · Computer Science 2024-04-16 Kostadin Garov , Dimitar I. Dimitrov , Nikola Jovanović , Martin Vechev

While cryptographic algorithms such as the ubiquitous Advanced Encryption Standard (AES) are secure, *physical implementations* of these algorithms in hardware inevitably 'leak' sensitive data such as cryptographic keys. A particularly…

Machine Learning · Computer Science 2026-03-26 Jimmy Gammell , Anand Raghunathan , Abolfazl Hashemi , Kaushik Roy