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Website fingerprinting (WF) attacks, which covertly monitor user communications to identify the web pages they visit, pose a serious threat to user privacy. Existing WF defenses attempt to reduce attack accuracy by disrupting traffic…

Cryptography and Security · Computer Science 2026-02-23 Siyuan Liang , Jiajun Gong , Tianmeng Fang , Aishan Liu , Tao Wang , Xiaochun Cao , Dacheng Tao , Ee-Chien Chang

Tor provides low-latency anonymous and uncensored network access against a local or network adversary. Due to the design choice to minimize traffic overhead (and increase the pool of potential users) Tor allows some information about the…

Cryptography and Security · Computer Science 2019-06-06 Shuai Li , Huajun Guo , Nicholas Hopper

Website fingerprinting attacks enable an adversary to infer which website a victim is visiting, even if the victim uses an encrypting proxy, such as Tor. Previous work has shown that all proposed defenses against website fingerprinting…

Cryptography and Security · Computer Science 2014-01-24 Xiang Cai , Rishab Nithyanand , Rob Johnson

Website fingerprinting enables an eavesdropper to determine which websites a user is visiting over an encrypted connection. State-of-the-art website fingerprinting (WF) attacks have demonstrated effectiveness even against Tor-protected…

Cryptography and Security · Computer Science 2025-01-23 Xinhao Deng , Xiyuan Zhao , Qilei Yin , Zhuotao Liu , Qi Li , Mingwei Xu , Ke Xu , Jianping Wu

Website Fingerprinting attacks enable a passive eavesdropper to recover the user's otherwise anonymized web browsing activity by matching the observed traffic with prerecorded web traffic templates. The defenses that have been proposed to…

Cryptography and Security · Computer Science 2016-07-20 Marc Juarez , Mohsen Imani , Mike Perry , Claudia Diaz , Matthew Wright

The diffusion of fingerprint verification systems for security applications makes it urgent to investigate the embedding of software-based presentation attack detection algorithms (PAD) into such systems. Companies and institutions need to…

Cryptography and Security · Computer Science 2021-10-22 Marco Micheletto , Gian Luca Marcialis , Giulia Orrù , Fabio Roli

Website Fingerprinting (WF) attacks can effectively identify the websites visited by Tor clients via analyzing encrypted traffic patterns. Existing attacks focus on identifying different websites, but their accuracy dramatically decreases…

Cryptography and Security · Computer Science 2024-09-09 Xiyuan Zhao , Xinhao Deng , Qi Li , Yunpeng Liu , Zhuotao Liu , Kun Sun , Ke Xu

We measure how effective Privacy Enhancing Technologies (PETs) are at protecting users from website fingerprinting. Our measurements use both experimental and observational methods. Experimental methods allow control, precision, and use on…

Cryptography and Security · Computer Science 2018-12-11 Amit Datta , Jianan Lu , Michael Carl Tschantz

Website fingerprinting (WF) attacks identify the websites visited over anonymized connections by analyzing patterns in network traffic flows, such as packet sizes, directions, or interval times using a machine learning classifier. Previous…

Cryptography and Security · Computer Science 2024-07-30 Chuxu Song , Zining Fan , Hao Wang , Richard Martin

Website Fingerprinting (WF) attacks exploit patterns in encrypted traffic to infer the websites visited by users, posing a serious threat to anonymous communication systems. Although recent WF techniques achieve over 90% accuracy in…

Cryptography and Security · Computer Science 2025-10-17 Xinhao Deng , Jingyou Chen , Linxiao Yu , Yixiang Zhang , Zhongyi Gu , Changhao Qiu , Xiyuan Zhao , Ke Xu , Qi Li

Fingerprint recognition systems are widely deployed in various real-life applications as they have achieved high accuracy. The widely used applications include border control, automated teller machine (ATM), and attendance monitoring…

Computer Vision and Pattern Recognition · Computer Science 2020-05-19 Jag Mohan Singh , Ahmed Madhun , Guoqiang Li , Raghavendra Ramachandra

A passive local eavesdropper can leverage Website Fingerprinting (WF) to deanonymize the web browsing activity of Tor users. The value of timing information to WF has often been discounted in recent works due to the volatility of low-level…

Cryptography and Security · Computer Science 2020-10-12 Mohammad Saidur Rahman , Payap Sirinam , Nate Mathews , Kantha Girish Gangadhara , Matthew Wright

Website fingerprinting (WF) is a dangerous attack on web privacy because it enables an adversary to predict the website a user is visiting, despite the use of encryption, VPNs, or anonymizing networks such as Tor. Previous WF work almost…

Cryptography and Security · Computer Science 2026-01-22 Rob Jansen , Ryan Wails , Aaron Johnson

Deep Neural Networks have proven to be highly accurate at a variety of tasks in recent years. The benefits of Deep Neural Networks have also been embraced in power grids to detect False Data Injection Attacks (FDIA) while conducting…

Cryptography and Security · Computer Science 2025-04-10 Farhin Farhad Riya , Shahinul Hoque , Yingyuan Yang , Jiangnan Li , Jinyuan Stella Sun , Hairong Qi

In this paper, we propose a new key-based defense focusing on both efficiency and robustness. Although the previous key-based defense seems effective in defending against adversarial examples, carefully designed adaptive attacks can bypass…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 AprilPyone MaungMaung , Isao Echizen , Hitoshi Kiya

Backdoor attacks pose a significant threat to deep neural networks, particularly as recent advancements have led to increasingly subtle implantation, making the defense more challenging. Existing defense mechanisms typically rely on an…

Cryptography and Security · Computer Science 2024-09-19 Yukai Xu , Yujie Gu , Kouichi Sakurai

Website fingerprinting attacks, which use statistical analysis on network traffic to compromise user privacy, have been shown to be effective even if the traffic is sent over anonymity-preserving networks such as Tor. The classical attack…

Cryptography and Security · Computer Science 2019-02-22 Anatoly Shusterman , Lachlan Kang , Yarden Haskal , Yosef Meltser , Prateek Mittal , Yossi Oren , Yuval Yarom

Website fingerprinting (WF) is a technique that allows an eavesdropper to determine the website a target user is accessing by inspecting the metadata associated with the packets she exchanges via some encrypted tunnel, e.g., Tor. Recent WF…

Cryptography and Security · Computer Science 2025-05-26 Michael Wrana , Uzma Maroof , Diogo Barradas

The vulnerability of automated fingerprint recognition systems to presentation attacks (PA), i.e., spoof or altered fingers, has been a growing concern, warranting the development of accurate and efficient presentation attack detection…

Computer Vision and Pattern Recognition · Computer Science 2020-04-08 Steven A. Grosz , Tarang Chugh , Anil K. Jain

Model-serving systems have become increasingly popular, especially in real-time web applications. In such systems, users send queries to the server and specify the desired performance metrics (e.g., desired accuracy, latency). The server…

Cryptography and Security · Computer Science 2023-08-08 Debopam Sanyal , Jui-Tse Hung , Manav Agrawal , Prahlad Jasti , Shahab Nikkhoo , Somesh Jha , Tianhao Wang , Sibin Mohan , Alexey Tumanov