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In this paper, we study the adversarial attack and defence problem in deep learning from the perspective of Fourier analysis. We first explicitly compute the Fourier transform of deep ReLU neural networks and show that there exist decaying…

Machine Learning · Computer Science 2019-05-31 Yuping Lin , Kasra Ahmadi K. A. , Hui Jiang

Although deep neural networks (DNNs) have achieved great success in many tasks, they can often be fooled by \emph{adversarial examples} that are generated by adding small but purposeful distortions to natural examples. Previous studies to…

Computer Vision and Pattern Recognition · Computer Science 2017-12-07 Weilin Xu , David Evans , Yanjun Qi

In recent years, many backdoor attacks based on training data poisoning have been proposed. However, in practice, those backdoor attacks are vulnerable to image compressions. When backdoor instances are compressed, the feature of specific…

Computer Vision and Pattern Recognition · Computer Science 2023-05-26 Mingfu Xue , Xin Wang , Shichang Sun , Yushu Zhang , Jian Wang , Weiqiang Liu

We study the effectiveness of various approaches that defend against adversarial attacks on deep networks via manipulations based on basis function representations of images. Specifically, we experiment with low-pass filtering, PCA, JPEG…

Deep Neural Networks (DNNs) are vulnerable to adversarial examples generated by imposing subtle perturbations to inputs that lead a model to predict incorrect outputs. Currently, a large number of researches on defending adversarial…

Computer Vision and Pattern Recognition · Computer Science 2020-01-01 Hua Wang , Jie Wang , Zhaoxia Yin

Adversarial perturbations can be added to images to protect their content from unwanted inferences. These perturbations may, however, be ineffective against classifiers that were not {seen} during the generation of the perturbation, or…

Computer Vision and Pattern Recognition · Computer Science 2020-10-01 Ricardo Sanchez-Matilla , Chau Yi Li , Ali Shahin Shamsabadi , Riccardo Mazzon , Andrea Cavallaro

Recent successful adversarial attacks on face recognition show that, despite the remarkable progress of face recognition models, they are still far behind the human intelligence for perception and recognition. It reveals the vulnerability…

Computer Vision and Pattern Recognition · Computer Science 2022-07-05 Keshav Kasichainula , Hadi Mansourifar , Weidong Shi

An adversarial example is a modified input image designed to cause a Machine Learning (ML) model to make a mistake; these perturbations are often invisible or subtle to human observers and highlight vulnerabilities in a model's ability to…

Cryptography and Security · Computer Science 2024-11-04 Ehsan Ganjidoost , Jeff Orchard

Neural network-based image classifiers are powerful tools for computer vision tasks, but they inadvertently reveal sensitive attribute information about their classes, raising concerns about their privacy. To investigate this privacy…

Machine Learning · Computer Science 2023-06-14 Lukas Struppek , Dominik Hintersdorf , Felix Friedrich , Manuel Brack , Patrick Schramowski , Kristian Kersting

Decision-based attack poses a severe threat to real-world applications since it regards the target model as a black box and only accesses the hard prediction label. Great efforts have been made recently to decrease the number of queries;…

Computer Vision and Pattern Recognition · Computer Science 2022-07-22 Xiaosen Wang , Zeliang Zhang , Kangheng Tong , Dihong Gong , Kun He , Zhifeng Li , Wei Liu

Many defenses against adversarial attacks (\eg robust classifiers, randomization, or image purification) use countermeasures put to work only after the attack has been crafted. We adopt a different perspective to introduce $A^5$…

Machine Learning · Computer Science 2023-05-24 Iuri Frosio , Jan Kautz

We propose new, more efficient targeted white-box attacks against deep neural networks. Our attacks better align with the attacker's goal: (1) tricking a model to assign higher probability to the target class than to any other class, while…

Machine Learning · Computer Science 2022-06-22 Weiran Lin , Keane Lucas , Lujo Bauer , Michael K. Reiter , Mahmood Sharif

We propose a Universal Defence against backdoor attacks based on Clustering and Centroids Analysis (CCA-UD). The goal of the defence is to reveal whether a Deep Neural Network model is subject to a backdoor attack by inspecting the training…

Computer Vision and Pattern Recognition · Computer Science 2023-12-12 Wei Guo , Benedetta Tondi , Mauro Barni

Conventional adversarial defenses reduce classification accuracy whether or not a model is under attacks. Moreover, most of image processing based defenses are defeated due to the problem of obfuscated gradients. In this paper, we propose a…

Machine Learning · Computer Science 2020-05-19 MaungMaung AprilPyone , Hitoshi Kiya

Data-free quantization is a task that compresses the neural network to low bit-width without access to original training data. Most existing data-free quantization methods cause severe performance degradation due to inaccurate activation…

Machine Learning · Computer Science 2022-06-23 Yefei He , Luoming Zhang , Weijia Wu , Hong Zhou

Security of inference phase deployment of Convolutional neural network (CNN) into resource constrained embedded systems (e.g. low end FPGAs) is a growing research area. Using secure practices, third party FPGA designers can be provided with…

Cryptography and Security · Computer Science 2021-07-14 Tolulope A. Odetola , Syed Rafay Hasan

The large model size, high computational operations, and vulnerability against membership inference attack (MIA) have impeded deep learning or deep neural networks (DNNs) popularity, especially on mobile devices. To address the challenge,…

Machine Learning · Computer Science 2021-07-06 Yijue Wang , Chenghong Wang , Zigeng Wang , Shanglin Zhou , Hang Liu , Jinbo Bi , Caiwen Ding , Sanguthevar Rajasekaran

Deep Neural Networks (DNNs) have been shown to be vulnerable against adversarial examples, which are data points cleverly constructed to fool the classifier. Such attacks can be devastating in practice, especially as DNNs are being applied…

Cryptography and Security · Computer Science 2018-01-30 Linh Nguyen , Sky Wang , Arunesh Sinha

Bit-flip attacks (BFAs) have attracted substantial attention recently, in which an adversary could tamper with a small number of model parameter bits to break the integrity of DNNs. To mitigate such threats, a batch of defense methods are…

Cryptography and Security · Computer Science 2023-02-28 Jialai Wang , Ziyuan Zhang , Meiqi Wang , Han Qiu , Tianwei Zhang , Qi Li , Zongpeng Li , Tao Wei , Chao Zhang

The rapidly growing body of research in adversarial machine learning has demonstrated that deep neural networks (DNNs) are highly vulnerable to adversarially generated images. This underscores the urgent need for practical defense that can…

Computer Vision and Pattern Recognition · Computer Science 2018-02-21 Nilaksh Das , Madhuri Shanbhogue , Shang-Tse Chen , Fred Hohman , Siwei Li , Li Chen , Michael E. Kounavis , Duen Horng Chau