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This paper presents a novel time synchronization attack (TSA) model for the Global Positioning System (GPS) based on clock data behavior changes in a higher-order derivative domain. Further, the time synchronization attack rejection and…

信号处理 · 电气工程与系统科学 2021-03-02 Erick Schmidt , Junhwan Lee , Nikolaos Gatsis , David Akopian

Autonomous unmanned aerial vehicles (UAVs) rely on global navigation satellite system (GNSS) pseudorange measurements for accurate real-time localization and navigation. However, this dependence exposes them to sophisticated spoofing…

机器学习 · 计算机科学 2025-07-16 Deepak Kumar Panda , Weisi Guo

The proliferation of surveillance cameras has greatly improved the physical security of many security-critical properties including buildings, stores, and homes. However, recent surveillance camera looping attacks demonstrate new security…

密码学与安全 · 计算机科学 2019-04-03 Nitya Lakshmanan , Inkyu Bang , Min Suk Kang , Jun Han , Jong Taek Lee

Data-driven Wi-Fi localization and tracking have shown great promise due to their lower reliance on specialized hardware compared to model-based methods. However, most existing data collection techniques provide only coarse-grained ground…

计算机视觉与模式识别 · 计算机科学 2025-09-15 Zijian Zhao , Tingwei Chen , Fanyi Meng , Zhijie Cai , Hang Li , Xiaoyang Li , Guangxu Zhu

Albeit recent progress in speaker verification generates powerful models, malicious attacks in the form of spoofed speech, are generally not coped with. Recent results in ASVSpoof2015 and BTAS2016 challenges indicate that spoof-aware…

音频与语音处理 · 电气工程与系统科学 2020-07-28 Heinrich Dinkel , Nanxin Chen , Yanmin Qian , Kai Yu

Hidden spy cameras have become a great privacy threat recently, as these low-cost, low-power, and small form-factor IoT devices can quietly monitor human activities in the indoor environment without generating any side-channel information.…

密码学与安全 · 计算机科学 2026-02-03 Wenhao Chen , Wenyi Morty Zhang , Wei Sun , Dinesh Bharadia , Roshan Ayyalasomayajula

The 6 GHz spectrum, recently opened for unlicensed use under Wi-Fi 6E and Wi-Fi 7, overlaps with frequencies used by mission-critical incumbent systems such as public safety communications and utility infrastructure. To prevent…

网络与互联网体系结构 · 计算机科学 2025-11-10 Yilu Dong , Tianchang Yang , Arupjyoti Bhuyan , Syed Rafiul Hussain

We present DeepCSI, a novel approach to Wi-Fi radio fingerprinting (RFP) which leverages standard-compliant beamforming feedback matrices to authenticate MU-MIMO Wi-Fi devices on the move. By capturing unique imperfections in off-the-shelf…

网络与互联网体系结构 · 计算机科学 2022-12-01 Francesca Meneghello , Michele Rossi , Francesco Restuccia

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…

信号处理 · 电气工程与系统科学 2025-03-07 Andrew Yuan , Rajeev Sahay

In online markets, sellers can maliciously recapture others' images on display screens to utilize as spoof images, which can be challenging to distinguish in human eyes. To prevent such harm, we propose an anti-spoofing method using the…

计算机视觉与模式识别 · 计算机科学 2021-10-11 Yonghyun Jeong , Doyeon Kim , Jaehyeon Lee , Minki Hong , Solbi Hwang , Jongwon Choi

This paper investigates whether large-scale GNSS spoofing activity can be inferred from maritime Automatic Identification System (AIS) position reports. A data-processing framework, called SeaSpoofFinder, available here:…

信号处理 · 电气工程与系统科学 2026-02-23 Jón Winkel , Tom Willems , Cillian O'Driscoll , Ignacio Fernandez-Hernandez

Unmanned aerial vehicles (UAVs) are increasingly employed to perform high-risk tasks that require minimal human intervention. However, UAVs face escalating cybersecurity threats, particularly from GNSS spoofing attacks. While previous…

密码学与安全 · 计算机科学 2025-03-13 Zhaoxuan Wang , Yang Li , Jie Zhang , Xingshuo Han , Kangbo Liu , Lyu Yang , yuan Zhou , Tianwei Zhang , Quan Pan

We develop a new location spoofing detection algorithm for geo-spatial tagging and location-based services in the Internet of Things (IoT), called Enhanced Location Spoofing Detection using Audibility (ELSA) which can be implemented at the…

密码学与安全 · 计算机科学 2017-03-29 Jing Yang Koh , Ido Nevat , Derek Leong , Wai-Choong Wong

The state-of-art models for speech synthesis and voice conversion are capable of generating synthetic speech that is perceptually indistinguishable from bonafide human speech. These methods represent a threat to the automatic speaker…

机器学习 · 计算机科学 2019-07-11 Moustafa Alzantot , Ziqi Wang , Mani B. Srivastava

The ASVspoof challenge series was born to spearhead research in anti-spoofing for automatic speaker verification (ASV). The two challenge editions in 2015 and 2017 involved the assessment of spoofing countermeasures (CMs) in isolation from…

音频与语音处理 · 电气工程与系统科学 2019-04-12 Tomi Kinnunen , Kong Aik Lee , Hector Delgado , Nicholas Evans , Massimiliano Todisco , Md Sahidullah , Junichi Yamagishi , Douglas A. Reynolds

Recent years have seen growing efforts to develop spoofing countermeasures (CMs) to protect automatic speaker verification (ASV) systems from being deceived by manipulated or artificial inputs. The reliability of spoofing CMs is typically…

LiDAR (Light Detection And Ranging) is an indispensable sensor for precise long- and wide-range 3D sensing, which directly benefited the recent rapid deployment of autonomous driving (AD). Meanwhile, such a safety-critical application…

密码学与安全 · 计算机科学 2024-02-09 Takami Sato , Yuki Hayakawa , Ryo Suzuki , Yohsuke Shiiki , Kentaro Yoshioka , Qi Alfred Chen

Detecting and mitigating Radio Frequency Interference (RFI) is critical for enabling and maximising the scientific output of radio telescopes. The emergence of machine learning methods has led to their application in radio astronomy, and in…

天体物理仪器与方法 · 物理学 2026-01-23 Nicholas J. Pritchard , Andreas Wicenec , Mohammed Bennamoun , Richard Dodson

Global Navigation Satellite Systems (GNSS) provide Positioning, Navigation, and Timing (PNT) information to over 4 billion devices worldwide. Despite its pervasive use in safety critical and high precision applications, GNSS remains…

密码学与安全 · 计算机科学 2025-11-10 Arslan Mumtaz , Mridula Singh

A major limitation to advances in fingerprint spoof detection is the lack of publicly available, large-scale fingerprint spoof datasets, a problem which has been compounded by increased concerns surrounding privacy and security of biometric…

计算机视觉与模式识别 · 计算机科学 2022-04-19 Steven A. Grosz , Anil K. Jain