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Skeletal sequence data, as a widely employed representation of human actions, are crucial in Human Activity Recognition (HAR). Recently, adversarial attacks have been proposed in this area, which exposes potential security concerns, and…

Computer Vision and Pattern Recognition · Computer Science 2025-02-13 Yunfeng Diao , Baiqi Wu , Ruixuan Zhang , Ajian Liu , Xiaoshuai Hao , Xingxing Wei , Meng Wang , He Wang

Deep neural networks are vulnerable to adversarial examples, even in the black-box setting where the attacker is only accessible to the model output. Recent studies have devised effective black-box attacks with high query efficiency.…

Machine Learning · Computer Science 2022-06-07 Zeyu Dai , Shengcai Liu , Ke Tang , Qing Li

Machine learning models trained on small data sets for security applications are especially vulnerable to adversarial attacks. Person identification from LiDAR based skeleton data requires time consuming and expensive data acquisition for…

Machine Learning · Computer Science 2026-03-26 Joseph G. Zalameda , Megan A. Witherow , Alexander M. Glandon , Jose Aguilera , Khan M. Iftekharuddin

Adversarial attacks, wherein slight inputs are carefully crafted to mislead intelligent models, have attracted increasing attention. However, a critical gap persists between theoretical advancements and practical application, particularly…

Cryptography and Security · Computer Science 2025-06-26 Sabrine Ennaji , Elhadj Benkhelifa , Luigi V. Mancini

Deep neural networks provide unprecedented performance in all image classification problems, taking advantage of huge amounts of data available for training. Recent studies, however, have shown their vulnerability to adversarial attacks,…

Computer Vision and Pattern Recognition · Computer Science 2020-09-24 Diego Gragnaniello , Francesco Marra , Giovanni Poggi , Luisa Verdoliva

Industrial Internet of Things (I-IoT) enables fully automated production systems by continuously monitoring devices and analyzing collected data. Machine learning methods are commonly utilized for data analytics in such systems.…

Cryptography and Security · Computer Science 2022-03-17 Onat Gungor , Tajana Rosing , Baris Aksanli

Unlike the white-box counterparts that are widely studied and readily accessible, adversarial examples in black-box settings are generally more Herculean on account of the difficulty of estimating gradients. Many methods achieve the task by…

Computer Vision and Pattern Recognition · Computer Science 2019-06-12 Ziang Yan , Yiwen Guo , Changshui Zhang

Integrating SDN and the IoT enhances network control and flexibility. DL-based AAD systems improve security by enabling real-time threat detection in SDN-IoT networks. However, these systems remain vulnerable to adversarial attacks that…

Cryptography and Security · Computer Science 2025-10-01 Tharindu Lakshan Yasarathna , Nhien-An Le-Khac

Skeletal motion plays a pivotal role in human activity recognition (HAR). Recently, attack methods have been proposed to identify the universal vulnerability of skeleton-based HAR(S-HAR). However, the research of adversarial transferability…

Computer Vision and Pattern Recognition · Computer Science 2024-09-06 Yunfeng Diao , Baiqi Wu , Ruixuan Zhang , Xun Yang , Meng Wang , He Wang

Due to the fast processing-speed and robustness it can achieve, skeleton-based action recognition has recently received the attention of the computer vision community. The recent Convolutional Neural Network (CNN)-based methods have shown…

Computer Vision and Pattern Recognition · Computer Science 2021-11-23 Han Chen , Yifan Jiang , Hanseok Ko

Deep neural networks (DNNs) have demonstrated excellent performance on various tasks, however they are under the risk of adversarial examples that can be easily generated when the target model is accessible to an attacker (white-box…

Machine Learning · Computer Science 2020-09-28 Yang Bai , Yuyuan Zeng , Yong Jiang , Yisen Wang , Shu-Tao Xia , Weiwei Guo

Human Activity Recognition (HAR) has been employed in a wide range of applications, e.g. self-driving cars, where safety and lives are at stake. Recently, the robustness of skeleton-based HAR methods have been questioned due to their…

Computer Vision and Pattern Recognition · Computer Science 2024-05-07 Yunfeng Diao , He Wang , Tianjia Shao , Yong-Liang Yang , Kun Zhou , David Hogg , Meng Wang

Adversarial attack on skeletal motion is a hot topic. However, existing researches only consider part of dynamic features when measuring distance between skeleton graph sequences, which results in poor imperceptibility. To this end, we…

Computer Vision and Pattern Recognition · Computer Science 2024-07-01 Feng Liu , Qing Xu , Qijian Zheng

We present a new method for black-box adversarial attack. Unlike previous methods that combined transfer-based and scored-based methods by using the gradient or initialization of a surrogate white-box model, this new method tries to learn a…

Machine Learning · Computer Science 2020-01-07 Zhichao Huang , Tong Zhang

Convolutional neural networks have outperformed humans in image recognition tasks, but they remain vulnerable to attacks from adversarial examples. Since these data are crafted by adding imperceptible noise to normal images, their existence…

Computer Vision and Pattern Recognition · Computer Science 2021-06-10 Heng Yin , Hengwei Zhang , Jindong Wang , Ruiyu Dou

Adversarial robustness in structured data remains an underexplored frontier compared to vision and language domains. In this work, we introduce a novel black-box, decision-based adversarial attack tailored for tabular data. Our approach…

Machine Learning · Computer Science 2025-11-25 Roie Kazoom , Yuval Ratzabi , Etamar Rothstein , Ofer Hadar

Adversarial black-box attacks aim to craft adversarial perturbations by querying input-output pairs of machine learning models. They are widely used to evaluate the robustness of pre-trained models. However, black-box attacks often suffer…

Machine Learning · Computer Science 2020-11-11 Lu Wang , Huan Zhang , Jinfeng Yi , Cho-Jui Hsieh , Yuan Jiang

Adversarial perturbations are a useful way to expose vulnerabilities in object detectors. Existing perturbation methods are frequently white-box, architecture specific and use a loss function. More importantly, while they are often…

Computer Vision and Pattern Recognition · Computer Science 2026-04-13 Melane Navaratnarajah , David A. Kelly , Hana Chockler

Note that this paper is superceded by "Black-Box Adversarial Attacks with Limited Queries and Information." Current neural network-based image classifiers are susceptible to adversarial examples, even in the black-box setting, where the…

Computer Vision and Pattern Recognition · Computer Science 2018-04-09 Andrew Ilyas , Logan Engstrom , Anish Athalye , Jessy Lin

Deep equilibrium models (DEQs) refrain from the traditional layer-stacking paradigm and turn to find the fixed point of a single layer. DEQs have achieved promising performance on different applications with featured memory efficiency. At…

Machine Learning · Computer Science 2023-06-05 Zonghan Yang , Tianyu Pang , Yang Liu