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Natural language processing (NLP) systems have been proven to be vulnerable to backdoor attacks, whereby hidden features (backdoors) are trained into a language model and may only be activated by specific inputs (called triggers), to trick…

Computation and Language · Computer Science 2021-09-29 Shaofeng Li , Hui Liu , Tian Dong , Benjamin Zi Hao Zhao , Minhui Xue , Haojin Zhu , Jialiang Lu

Recently, backdoor attacks pose a new security threat to the training process of deep neural networks (DNNs). Attackers intend to inject hidden backdoors into DNNs, such that the attacked model performs well on benign samples, whereas its…

Cryptography and Security · Computer Science 2021-08-16 Yuezun Li , Yiming Li , Baoyuan Wu , Longkang Li , Ran He , Siwei Lyu

Backdoor attacks have been widely studied to hide the misclassification rules in the normal models, which are only activated when the model is aware of the specific inputs (i.e., the trigger). However, despite their success in the…

Artificial Intelligence · Computer Science 2022-01-19 Liang Chen , Qibiao Peng , Jintang Li , Yang Liu , Jiawei Chen , Yong Li , Zibin Zheng

Deep Neural Networks (DNNs) have shown great promise in various domains. However, vulnerabilities associated with DNN training, such as backdoor attacks, are a significant concern. These attacks involve the subtle insertion of triggers…

Cryptography and Security · Computer Science 2025-09-18 Bart Pleiter , Behrad Tajalli , Stefanos Koffas , Gorka Abad , Jing Xu , Martha Larson , Stjepan Picek

Although deep neural networks (DNNs) have made rapid progress in recent years, they are vulnerable in adversarial environments. A malicious backdoor could be embedded in a model by poisoning the training dataset, whose intention is to make…

Cryptography and Security · Computer Science 2021-03-25 Yinpeng Dong , Xiao Yang , Zhijie Deng , Tianyu Pang , Zihao Xiao , Hang Su , Jun Zhu

As the capacity of deep neural networks (DNNs) increases, their need for huge amounts of data significantly grows. A common practice is to outsource the training process or collect more data over the Internet, which introduces the risks of…

Machine Learning · Computer Science 2023-11-14 Soroush Hashemifar , Saeed Parsa , Morteza Zakeri-Nasrabadi

In this paper, we introduce a quantum extension of classical DNN, QDNN. The QDNN consisting of quantum structured layers can uniformly approximate any continuous function and has more representation power than the classical DNN. It still…

Quantum Physics · Physics 2020-10-20 Chen Zhao , Xiao-Shan Gao

Backdoor attacks pose a critical threat to the security of deep neural networks, yet existing efforts on universal backdoors often rely on visually salient patterns, making them easier to detect and less practical at scale. In this work, we…

Cryptography and Security · Computer Science 2026-03-03 Hsin Lin , Yan-Lun Chen , Ren-Hung Hwang , Chia-Mu Yu

Dataset condensation aims to synthesize compact yet informative datasets that retain the training efficacy of full-scale data, offering substantial gains in efficiency. Recent studies reveal that the condensation process can be vulnerable…

Cryptography and Security · Computer Science 2026-04-01 He Yang , Dongyi Lv , Song Ma , Wei Xi , Jizhong Zhao

Deep learning models have consistently outperformed traditional machine learning models in various classification tasks, including image classification. As such, they have become increasingly prevalent in many real world applications…

Cryptography and Security · Computer Science 2018-08-31 Cong Liao , Haoti Zhong , Anna Squicciarini , Sencun Zhu , David Miller

Quantum neural networks (QNN) hold immense potential for the future of quantum machine learning (QML). However, QNN security and robustness remain largely unexplored. In this work, we proposed novel Trojan attacks based on the quantum…

Quantum Physics · Physics 2025-07-14 Sounak Bhowmik , Travis S. Humble , Himanshu Thapliyal

Backdoor attacks impose a new threat in Deep Neural Networks (DNNs), where a backdoor is inserted into the neural network by poisoning the training dataset, misclassifying inputs that contain the adversary trigger. The major challenge for…

Machine Learning · Computer Science 2024-09-26 Yue Wang , Wenqing Li , Esha Sarkar , Muhammad Shafique , Michail Maniatakos , Saif Eddin Jabari

Variational quantum algorithms (VQAs) are a central paradigm for noisy intermediate-scale (NISQ) quantum computing, yet their reliance on predesigned and pretrained variational quantum circuits (VQCs) introduces critical security…

Quantum Physics · Physics 2026-05-14 Lei Jiang , Fan Chen

In the noisy intermediate-scale quantum (NISQ) era, one of the key questions is how to deal with the high noise level existing in physical quantum bits (qubits). Quantum error correction is promising but requires an extensive number (e.g.,…

Quantum Physics · Physics 2021-10-29 Zhiding Liang , Zhepeng Wang , Junhuan Yang , Lei Yang , Jinjun Xiong , Yiyu Shi , Weiwen Jiang

The neural network and quantum computing are both significant and appealing fields, with their interactive disciplines promising for large-scale computing tasks that are untackled by conventional computers. However, both developments are…

Quantum Physics · Physics 2021-06-22 Feihong Shen , Jun Liu

Graph neural network (GNN) with a powerful representation capability has been widely applied to various areas, such as biological gene prediction, social recommendation, etc. Recent works have exposed that GNN is vulnerable to the backdoor…

Machine Learning · Computer Science 2023-05-30 Haibin Zheng , Haiyang Xiong , Jinyin Chen , Haonan Ma , Guohan Huang

Designing quantum neural networks (QNNs) that are both accurate and deployable on NISQ hardware is challenging. Handcrafted ansatze must balance expressivity, trainability, and resource use, while limited qubits often necessitate circuit…

Quantum Physics · Physics 2026-04-09 Kooshan Maleki , Alberto Marchisio , Muhammad Shafique

Recent studies have shown that DNNs can be compromised by backdoor attacks crafted at training time. A backdoor attack installs a backdoor into the victim model by injecting a backdoor pattern into a small proportion of the training data.…

Computer Vision and Pattern Recognition · Computer Science 2020-07-14 Yunfei Liu , Xingjun Ma , James Bailey , Feng Lu

Backdoor attacks pose a persistent security risk to deep neural networks (DNNs) due to their stealth and durability. While recent research has explored leveraging model unlearning mechanisms to enhance backdoor concealment, existing attack…

Cryptography and Security · Computer Science 2025-10-16 Baogang Song , Dongdong Zhao , Jianwen Xiang , Qiben Xu , Zizhuo Yu

While security vulnerabilities in traditional Deep Neural Networks (DNNs) have been extensively studied, the susceptibility of Spiking Neural Networks (SNNs) to adversarial attacks remains mostly underexplored. Until now, the mechanisms to…

Cryptography and Security · Computer Science 2024-11-06 Roberto Riaño , Gorka Abad , Stjepan Picek , Aitor Urbieta