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Black-Box attacks on machine learning models occur when an attacker, despite having no access to the inner workings of a model, can successfully craft an attack by means of model theft. The attacker will train an own substitute model that…

机器学习 · 计算机科学 2017-11-16 Yannic Kilcher , Thomas Hofmann

Deep learning has made significant breakthroughs in many fields, including electroencephalogram (EEG) based brain-computer interfaces (BCIs). However, deep learning models are vulnerable to adversarial attacks, in which deliberately…

机器学习 · 计算机科学 2019-11-12 Xue Jiang , Xiao Zhang , Dongrui Wu

Deep neural networks are widely used in various fields because of their powerful performance. However, recent studies have shown that deep learning models are vulnerable to adversarial attacks, i.e., adding a slight perturbation to the…

机器学习 · 计算机科学 2022-05-17 Youhuan Yang , Lei Sun , Leyu Dai , Song Guo , Xiuqing Mao , Xiaoqin Wang , Bayi Xu

Recent works have shown that deep neural networks are vulnerable to adversarial examples that find samples close to the original image but can make the model misclassify. Even with access only to the model's output, an attacker can employ…

机器学习 · 计算机科学 2023-10-03 Quang H. Nguyen , Yingjie Lao , Tung Pham , Kok-Seng Wong , Khoa D. Doan

This is Btech thesis report on detection and purification of adverserially attacked images. A deep learning model is trained on certain training examples for various tasks such as classification, regression etc. By training, weights are…

机器学习 · 计算机科学 2022-05-18 Dvij Kalaria

Data Poisoning (DP) is an effective attack that causes trained classifiers to misclassify their inputs. DP attacks significantly degrade a classifier's accuracy by covertly injecting attack samples into the training set. Broadly applicable…

机器学习 · 计算机科学 2022-05-13 Xi Li , David J. Miller , Zhen Xiang , George Kesidis

In this paper, we propose Code-Bridged Classifier (CBC), a framework for making a Convolutional Neural Network (CNNs) robust against adversarial attacks without increasing or even by decreasing the overall models' computational complexity.…

To evaluate the robustness gain of Bayesian neural networks on image classification tasks, we perform input perturbations, and adversarial attacks to the state-of-the-art Bayesian neural networks, with a benchmark CNN model as reference.…

机器学习 · 计算机科学 2021-06-18 Yutian Pang , Sheng Cheng , Jueming Hu , Yongming Liu

Harmful fine-tuning poses critical safety risks to fine-tuning-as-a-service for large language models. Existing defense strategies preemptively build robustness via attack simulation but suffer from fundamental limitations: (i) the…

机器学习 · 计算机科学 2025-11-03 Zixuan Hu , Li Shen , Zhenyi Wang , Yongxian Wei , Dacheng Tao

Modern deep learning tools are remarkably effective in addressing intricate problems. However, their operation as black-box models introduces increased uncertainty in predictions. Additionally, they contend with various challenges,…

机器学习 · 计算机科学 2024-04-09 Sourav Ganguly , Saprativa Bhattacharjee

Deep learning algorithms and networks are vulnerable to perturbed inputs which is known as the adversarial attack. Many defense methodologies have been investigated to defend against such adversarial attack. In this work, we propose a novel…

机器学习 · 计算机科学 2018-02-08 Adnan Siraj Rakin , Zhezhi He , Boqing Gong , Deliang Fan

The growing body of literature on training-data reconstruction attacks raises significant concerns about deploying neural network classifiers trained on sensitive data. However, differentially private (DP) training (e.g. using DP-SGD) can…

密码学与安全 · 计算机科学 2025-10-29 Robert Allison , Tomasz Maciążek , Henry Bourne

Deep neural networks (DNNs) are recently shown to be vulnerable to backdoor attacks, where attackers embed hidden backdoors in the DNN model by injecting a few poisoned examples into the training dataset. While extensive efforts have been…

人工智能 · 计算机科学 2023-03-14 Zaixi Zhang , Qi Liu , Zhicai Wang , Zepu Lu , Qingyong Hu

Supervised fine-tuning has become the predominant method for adapting large pretrained models to downstream tasks. However, recent studies have revealed that these models are vulnerable to backdoor attacks, where even a small number of…

密码学与安全 · 计算机科学 2025-01-08 Peihai Jiang , Xixiang Lyu , Yige Li , Jing Ma

We formally study the problem of classification under adversarial perturbations from a learner's perspective as well as a third-party who aims at certifying the robustness of a given black-box classifier. We analyze a PAC-type framework of…

机器学习 · 统计学 2022-02-23 Hassan Ashtiani , Vinayak Pathak , Ruth Urner

Bayesian Neural Networks (BNNs), unlike Traditional Neural Networks (TNNs) are robust and adept at handling adversarial attacks by incorporating randomness. This randomness improves the estimation of uncertainty, a feature lacking in TNNs.…

机器学习 · 计算机科学 2021-11-17 Adaku Uchendu , Daniel Campoy , Christopher Menart , Alexandra Hildenbrandt

An adversary who aims to steal a black-box model repeatedly queries the model via a prediction API to learn a function that approximates its decision boundary. Adversarial approximation is non-trivial because of the enormous combinations of…

密码学与安全 · 计算机科学 2020-06-30 Abdullah Ali , Birhanu Eshete

The increasing use of machine learning in safety-critical domains amplifies the risk of adversarial threats, especially data poisoning attacks that corrupt training data to degrade performance or induce unsafe behavior. Most existing…

机器学习 · 计算机科学 2026-05-13 Sara Taheri , Mahalakshmi Sabanayagam , Debarghya Ghoshdastidar , Majid Zamani

Publicly releasing the specification of a model with its trained parameters means an adversary can attempt to reconstruct information about the training data via training data reconstruction attacks, a major vulnerability of modern machine…

机器学习 · 统计学 2025-07-25 George Wynne

Fair classification aims to stress the classification models to achieve the equality (treatment or prediction quality) among different sensitive groups. However, fair classification can be under the risk of poisoning attacks that…

机器学习 · 计算机科学 2022-10-19 Han Xu , Xiaorui Liu , Yuxuan Wan , Jiliang Tang