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Current black-box adversarial attacks either require multiple queries or diffusion models to produce adversarial samples that can impair the target model performance. However, these methods require training a surrogate loss or diffusion…

Computer Vision and Pattern Recognition · Computer Science 2025-12-08 Joana C. Costa , Tiago Roxo , Hugo Proença , Pedro R. M. Inácio

Adversarial examples are well-known tools to evaluate the vulnerability of deep neural networks (DNNs). Although lots of adversarial attack algorithms have been developed, it's still challenging in the practical scenario that the model's…

Cryptography and Security · Computer Science 2025-05-27 Meixi Zheng , Xuanchen Yan , Zihao Zhu , Hongrui Chen , Baoyuan Wu

Machine Learning systems are vulnerable to adversarial attacks and will highly likely produce incorrect outputs under these attacks. There are white-box and black-box attacks regarding to adversary's access level to the victim learning…

Machine Learning · Computer Science 2019-10-23 Saeid Samizade , Zheng-Hua Tan , Chao Shen , Xiaohong Guan

We focus on the problem of adversarial attacks against models on discrete sequential data in the black-box setting where the attacker aims to craft adversarial examples with limited query access to the victim model. Existing black-box…

Machine Learning · Computer Science 2022-06-20 Deokjae Lee , Seungyong Moon , Junhyeok Lee , Hyun Oh Song

While deep neural networks show unprecedented performance in various tasks, the vulnerability to adversarial examples hinders their deployment in safety-critical systems. Many studies have shown that attacks are also possible even in a…

Cryptography and Security · Computer Science 2021-11-09 Junyoung Byun , Hyojun Go , Changick Kim

Deep neural networks are becoming popular and important assets of many AI companies. However, recent studies indicate that they are also vulnerable to adversarial attacks. Adversarial attacks can be either white-box or black-box. The…

Cryptography and Security · Computer Science 2019-07-25 Yun Xiang , Zhuangzhi Chen , Zuohui Chen , Zebin Fang , Haiyang Hao , Jinyin Chen , Yi Liu , Zhefu Wu , Qi Xuan , Xiaoniu Yang

In black-box adversarial attacks, adversaries query the deep neural network (DNN), use the output to reconstruct gradients, and then optimize the adversarial inputs iteratively. In this paper, we study the method of adding white noise to…

Cryptography and Security · Computer Science 2021-10-01 Manjushree B. Aithal , Xiaohua Li

Machine learning security has recently become a prominent topic in the natural language processing (NLP) area. The existing black-box adversarial attack suffers prohibitively from the high model querying complexity, resulting in easily…

Cryptography and Security · Computer Science 2023-10-17 Wenjie Lv , Zhen Wang , Yitao Zheng , Zhehua Zhong , Qi Xuan , Tianyi Chen

Deep Neural Networks (DNNs) have recently led to significant improvements in many fields. However, DNNs are vulnerable to adversarial examples which are samples with imperceptible perturbations while dramatically misleading the DNNs.…

Computer Vision and Pattern Recognition · Computer Science 2018-11-11 Jiayang Liu , Weiming Zhang , Nenghai Yu

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

Deep Neural Networks (DNNs) are acknowledged as vulnerable to adversarial attacks, while the existing black-box attacks require extensive queries on the victim DNN to achieve high success rates. For query-efficiency, surrogate models of the…

Machine Learning · Computer Science 2023-03-14 Sizhe Chen , Zhehao Huang , Qinghua Tao , Xiaolin Huang

Deep Neural Network (DNN) classifiers are vulnerable to adversarial attack, where an imperceptible perturbation could result in misclassification. However, the vulnerability of DNN-based image ranking systems remains under-explored. In this…

Computer Vision and Pattern Recognition · Computer Science 2020-07-07 Mo Zhou , Zhenxing Niu , Le Wang , Qilin Zhang , Gang Hua

Deep neural networks (DNNs) have achieved state-of-the-art performance in many tasks but have shown extreme vulnerabilities to attacks generated by adversarial examples. Many works go with a white-box attack that assumes total access to the…

Cryptography and Security · Computer Science 2022-03-10 Phoenix Williams , Ke Li

Adversarial attacks have threatened the application of deep neural networks in security-sensitive scenarios. Most existing black-box attacks fool the target model by interacting with it many times and producing global perturbations.…

Computer Vision and Pattern Recognition · Computer Science 2021-01-05 Tao Xiang , Hangcheng Liu , Shangwei Guo , Tianwei Zhang , Xiaofeng Liao

Machine learning (ML) models, e.g., deep neural networks (DNNs), are vulnerable to adversarial examples: malicious inputs modified to yield erroneous model outputs, while appearing unmodified to human observers. Potential attacks include…

Cryptography and Security · Computer Science 2017-03-21 Nicolas Papernot , Patrick McDaniel , Ian Goodfellow , Somesh Jha , Z. Berkay Celik , Ananthram Swami

The output of Deep Neural Networks (DNN) can be altered by a small perturbation of the input in a black box setting by making multiple calls to the DNN. However, the high computation and time required makes the existing approaches unusable.…

Cryptography and Security · Computer Science 2022-05-05 Tianxun Zhou , Shubhankar Agrawal , Prateek Manocha

Deep Neural Networks (DNNs) are increasingly applied in the real world in safety critical applications like advanced driver assistance systems. An example for such use case is represented by traffic sign recognition systems. At the same…

Computer Vision and Pattern Recognition · Computer Science 2023-03-10 Fabian Woitschek , Georg Schneider

Deep neural networks (DNNs) are known for their vulnerability to adversarial examples. These are examples that have undergone small, carefully crafted perturbations, and which can easily fool a DNN into making misclassifications at test…

Machine Learning · Computer Science 2019-07-01 Linxi Jiang , Xingjun Ma , Shaoxiang Chen , James Bailey , Yu-Gang Jiang

In the last decade, deep neural networks have proven to be very powerful in computer vision tasks, starting a revolution in the computer vision and machine learning fields. However, deep neural networks, usually, are not robust to…

Computer Vision and Pattern Recognition · Computer Science 2021-05-03 Hao Qiu , Leonardo Lucio Custode , Giovanni Iacca

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