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Motivated by safety-critical classification problems, we investigate adversarial attacks against cost-sensitive classifiers. We use current state-of-the-art adversarially-resistant neural network classifiers [1] as the underlying models.…

Machine Learning · Statistics 2019-10-08 Gavin S. Hartnett , Andrew J. Lohn , Alexander P. Sedlack

Adversarial perturbations dramatically decrease the accuracy of state-of-the-art image classifiers. In this paper, we propose and analyze a simple and computationally efficient defense strategy: inject random Gaussian noise, discretize each…

Machine Learning · Computer Science 2019-03-27 Yuchen Zhang , Percy Liang

Adversarial attacks against Deep Neural Networks have been widely studied. One significant feature that makes such attacks particularly powerful is transferability, where the adversarial examples generated from one model can be effective…

Cryptography and Security · Computer Science 2020-09-29 Renzhi Wang , Tianwei Zhang , Xiaofei Xie , Lei Ma , Cong Tian , Felix Juefei-Xu , Yang Liu

We propose a novel genetic-algorithm technique that generates black-box adversarial examples which successfully fool neural network based text classifiers. We perform a genetic search with multi-objective optimization guided by deep…

Artificial Intelligence · Computer Science 2020-11-11 Alex Mathai , Shreya Khare , Srikanth Tamilselvam , Senthil Mani

Adversarial examples are inputs intentionally generated for fooling a deep neural network. Recent studies have proposed unrestricted adversarial attacks that are not norm-constrained. However, the previous unrestricted attack methods still…

Computer Vision and Pattern Recognition · Computer Science 2022-08-25 Dongbin Na , Sangwoo Ji , Jong Kim

Deep Learning models are vulnerable to adversarial examples, i.e.\ images obtained via deliberate imperceptible perturbations, such that the model misclassifies them with high confidence. However, class confidence by itself is an incomplete…

Machine Learning · Statistics 2017-11-23 Ambrish Rawat , Martin Wistuba , Maria-Irina Nicolae

Deep neural networks have recently achieved tremendous success in image classification. Recent studies have however shown that they are easily misled into incorrect classification decisions by adversarial examples. Adversaries can even…

Machine Learning · Computer Science 2019-03-27 Yujia Liu , Seyed-Mohsen Moosavi-Dezfooli , Pascal Frossard

Adversarial attack methods for 3D point cloud classification reveal the vulnerabilities of point cloud recognition models. This vulnerability could lead to safety risks in critical applications that use deep learning models, such as…

Cryptography and Security · Computer Science 2025-07-30 Ruiyang Zhao , Bingbing Zhu , Chuxuan Tong , Xiaoyi Zhou , Xi Zheng

Adversarial examples are malicious inputs to machine learning models that trigger a misclassification. This type of attack has been studied for close to a decade, and we find that there is a lack of study and formalization of adversary…

Machine Learning · Computer Science 2024-02-26 Lucas Fenaux , Florian Kerschbaum

Existing black box search methods have achieved high success rate in generating adversarial attacks against NLP models. However, such search methods are inefficient as they do not consider the amount of queries required to generate…

Computation and Language · Computer Science 2021-09-13 Rishabh Maheshwary , Saket Maheshwary , Vikram Pudi

Adversarial examples are typically constructed by perturbing an existing data point within a small matrix norm, and current defense methods are focused on guarding against this type of attack. In this paper, we propose unrestricted…

Machine Learning · Computer Science 2018-12-04 Yang Song , Rui Shu , Nate Kushman , Stefano Ermon

The existence of adversarial attacks (or adversarial examples) brings huge concern about the machine learning (ML) model's safety issues. For many safety-critical ML tasks, such as financial forecasting, fraudulent detection, and anomaly…

Machine Learning · Computer Science 2022-10-19 Han Xu , Menghai Pan , Zhimeng Jiang , Huiyuan Chen , Xiaoting Li , Mahashweta Das , Hao Yang

The study of adversarial vulnerabilities of deep neural networks (DNNs) has progressed rapidly. Existing attacks require either internal access (to the architecture, parameters, or training set of the victim model) or external access (to…

Computer Vision and Pattern Recognition · Computer Science 2020-12-07 Qizhang Li , Yiwen Guo , Hao Chen

Deep neural networks are vulnerable to adversarial examples, which are crafted by applying small, human-imperceptible perturbations on the original images, so as to mislead deep neural networks to output inaccurate predictions. Adversarial…

Computer Vision and Pattern Recognition · Computer Science 2021-02-09 Bo Yang , Hengwei Zhang , Yuchen Zhang , Kaiyong Xu , Jindong Wang

Deep learning models are known to be vulnerable to adversarial examples. A practical adversarial attack should require as little as possible knowledge of attacked models. Current substitute attacks need pre-trained models to generate…

Cryptography and Security · Computer Science 2020-04-01 Mingyi Zhou , Jing Wu , Yipeng Liu , Xiaolin Huang , Shuaicheng Liu , Xiang Zhang , Ce Zhu

Image classifiers based on deep neural networks suffer from harassment caused by adversarial examples. Two defects exist in black-box iterative attacks that generate adversarial examples by incrementally adjusting the noise-adding direction…

Computer Vision and Pattern Recognition · Computer Science 2019-04-03 Yucheng Shi , Siyu Wang , Yahong Han

This paper proposes a black-box adversarial attack method to automatic speech recognition systems. Some studies have attempted to attack neural networks for speech recognition; however, these methods did not consider the robustness of…

Sound · Computer Science 2024-07-09 Shoma Ishida , Satoshi Ono

Modern applications of artificial neural networks have yielded remarkable performance gains in a wide range of tasks. However, recent studies have discovered that such modelling strategy is vulnerable to Adversarial Examples, i.e. examples…

Computer Vision and Pattern Recognition · Computer Science 2019-04-24 João Monteiro , Isabela Albuquerque , Zahid Akhtar , Tiago H. Falk

Deep learning systems, critical in domains like autonomous vehicles, are vulnerable to adversarial examples (crafted inputs designed to mislead classifiers). This study investigates black-box adversarial attacks in computer vision. This is…

Cryptography and Security · Computer Science 2025-06-09 Francesco Panebianco , Mario D'Onghia , Stefano Zanero aand Michele Carminati

Deep neural networks (DNNs) are shown to be susceptible to adversarial example attacks. Most existing works achieve this malicious objective by crafting subtle pixel-wise perturbations, and they are difficult to launch in the physical world…

Machine Learning · Computer Science 2020-08-31 Bo Luo , Qiang Xu