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Backdoor attack has been considered as a serious security threat to deep neural networks (DNNs). Poisoned sample detection (PSD) that aims at filtering out poisoned samples from an untrustworthy training dataset has shown very promising…

Computer Vision and Pattern Recognition · Computer Science 2024-11-19 Mingda Zhang , Mingli Zhu , Zihao Zhu , Baoyuan Wu

Backdoor defenses have recently become important in resisting backdoor attacks in deep neural networks (DNNs), where attackers implant backdoors into the DNN model by injecting backdoor samples into the training dataset. Although there are…

Cryptography and Security · Computer Science 2025-03-04 Xinfu Li , Junying Zhang , Xindi Ma

Recent studies have exposed that GNNs are vulnerable to several adversarial attacks, among which backdoor attack is one of the toughest. Similar to Deep Neural Networks (DNNs), backdoor attacks in GNNs lie in the fact that the attacker…

Cryptography and Security · Computer Science 2024-11-14 Jiale Zhang , Chengcheng Zhu , Bosen Rao , Hao Sui , Xiaobing Sun , Bing Chen , Chunyi Zhou , Shouling Ji

Since Deep Learning (DL) backdoor attacks have been revealed as one of the most insidious adversarial attacks, a number of countermeasures have been developed with certain assumptions defined in their respective threat models. However, the…

Cryptography and Security · Computer Science 2022-04-14 Huming Qiu , Hua Ma , Zhi Zhang , Alsharif Abuadbba , Wei Kang , Anmin Fu , Yansong Gao

Deep Learning backdoor attacks have a threat model similar to traditional cyber attacks. Attack forensics, a critical counter-measure for traditional cyber attacks, is hence of importance for defending model backdoor attacks. In this paper,…

Cryptography and Security · Computer Science 2023-01-18 Siyuan Cheng , Guanhong Tao , Yingqi Liu , Shengwei An , Xiangzhe Xu , Shiwei Feng , Guangyu Shen , Kaiyuan Zhang , Qiuling Xu , Shiqing Ma , Xiangyu Zhang

Recently backdoor attack has become an emerging threat to the security of deep neural network (DNN) models. To date, most of the existing studies focus on backdoor attack against the uncompressed model; while the vulnerability of compressed…

Cryptography and Security · Computer Science 2022-08-24 Huy Phan , Cong Shi , Yi Xie , Tianfang Zhang , Zhuohang Li , Tianming Zhao , Jian Liu , Yan Wang , Yingying Chen , Bo Yuan

Deep neural networks (DNNs) have achieved tremendous success in various applications including video action recognition, yet remain vulnerable to backdoor attacks (Trojans). The backdoor-compromised model will mis-classify to the target…

Computer Vision and Pattern Recognition · Computer Science 2023-12-12 Xi Li , Songhe Wang , Ruiquan Huang , Mahanth Gowda , George Kesidis

Recent researches show that deep learning model is susceptible to backdoor attacks. Many defenses against backdoor attacks have been proposed. However, existing defense works require high computational overhead or backdoor attack…

Computer Vision and Pattern Recognition · Computer Science 2023-05-26 Mingfu Xue , Yinghao Wu , Zhiyu Wu , Yushu Zhang , Jian Wang , Weiqiang Liu

Deep neural networks (DNN), despite their remarkable performance, are highly vulnerable to backdoor attacks. Existing defenses mainly rely on activation anomaly analysis or trigger reverse engineering and often require clean samples or…

Cryptography and Security · Computer Science 2026-05-20 Yinbo Yu , Jing Fang , Xuewen Zhang , Chunwei Tian , Qi Zhu , Daoqiang Zhang , Jiajia Liu

Backdoors and adversarial examples are the two primary threats currently faced by deep neural networks (DNNs). Both attacks attempt to hijack the model behaviors with unintended outputs by introducing (small) perturbations to the inputs.…

Cryptography and Security · Computer Science 2024-01-22 Yunjie Ge , Qian Wang , Huayang Huang , Qi Li , Cong Wang , Chao Shen , Lingchen Zhao , Peipei Jiang , Zheng Fang , Shenyi Zhang

The increasing importance of both deep neural networks (DNNs) and cloud services for training them means that bad actors have more incentive and opportunity to insert backdoors to alter the behavior of trained models. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2022-12-19 Khondoker Murad Hossain , Tim Oates

Recent studies have proven that deep neural networks are vulnerable to backdoor attacks. Specifically, by mixing a small number of poisoned samples into the training set, the behavior of the trained model can be maliciously controlled.…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Pengfei Xia , Ziqiang Li , Wei Zhang , Bin Li

As machine learning (ML) systems are being increasingly employed in the real world to handle sensitive tasks and make decisions in various fields, the security and privacy of those models have also become increasingly critical. In…

Cryptography and Security · Computer Science 2023-02-21 Marwan Omar

As deep neural networks and the datasets used to train them get larger, the default approach to integrating them into research and commercial projects is to download a pre-trained model and fine tune it. But these models can have uncertain…

Machine Learning · Computer Science 2024-01-12 Khondoker Murad Hossain , Tim Oates

Deep neural networks (DNNs) are vulnerable to the \emph{backdoor attack}, which intends to embed hidden backdoors in DNNs by poisoning training data. The attacked model behaves normally on benign samples, whereas its prediction will be…

Cryptography and Security · Computer Science 2021-04-06 Yiming Li , Yanjie Li , Yalei Lv , Yong Jiang , Shu-Tao Xia

Machine learning (ML) will likely play a large role in many processes in the future, also for insurance companies. However, ML models are at risk of being attacked and manipulated. In this work, the robustness of Gradient Boosted Decision…

Machine Learning · Computer Science 2025-09-30 Robin Kühlem , Daniel Otten , Daniel Ludwig , Anselm Hudde , Alexander Rosenbaum , Andreas Mauthe

Recently, self-supervised learning (SSL) was shown to be vulnerable to patch-based data poisoning backdoor attacks. It was shown that an adversary can poison a small part of the unlabeled data so that when a victim trains an SSL model on…

Computer Vision and Pattern Recognition · Computer Science 2023-04-05 Ajinkya Tejankar , Maziar Sanjabi , Qifan Wang , Sinong Wang , Hamed Firooz , Hamed Pirsiavash , Liang Tan

Backdoor unlearning aims to remove backdoor-related information while preserving the model's original functionality. However, existing unlearning methods mainly focus on recovering trigger patterns but fail to restore the correct semantic…

Cryptography and Security · Computer Science 2025-07-15 Yanghao Su , Jie Zhang , Yiming Li , Tianwei Zhang , Qing Guo , Weiming Zhang , Nenghai Yu , Nils Lukas , Wenbo Zhou

Backdoor attacks pose a serious threat to deep learning models by allowing adversaries to implant hidden behaviors that remain dormant on clean inputs but are maliciously triggered at inference. Existing backdoor attack methods typically…

Cryptography and Security · Computer Science 2025-11-18 Lijie Hu , Junchi Liao , Weimin Lyu , Shaopeng Fu , Tianhao Huang , Shu Yang , Guimin Hu , Di Wang

Backdoor attacks involve the injection of a limited quantity of poisoned examples containing triggers into the training dataset. During the inference stage, backdoor attacks can uphold a high level of accuracy for normal examples, yet when…

Cryptography and Security · Computer Science 2024-06-25 Hanfeng Xia , Haibo Hong , Ruili Wang