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Consistency models are a new class of models that generate images by directly mapping noise to data, allowing for one-step generation and significantly accelerating the sampling process. However, their robustness against adversarial attacks…

Cryptography and Security · Computer Science 2025-02-18 Chengen Wang , Murat Kantarcioglu

Backdoor attacks implant hidden behaviors into models by poisoning training data or modifying the model directly. These attacks aim to maintain high accuracy on benign inputs while causing misclassification when a specific trigger is…

Cryptography and Security · Computer Science 2025-12-10 Jianyao Yin , Luca Arnaboldi , Honglong Chen , Pascal Berrang , Mark Ryan

Recently, the diffusion model has gained significant attention as one of the most successful image generation models, which can generate high-quality images by iteratively sampling noise. However, recent studies have shown that diffusion…

Computer Vision and Pattern Recognition · Computer Science 2025-09-12 Jiahao Chen , Yu Pan , Yi Du , Chunkai Wu , Lin Wang

Deep neural networks have demonstrated remarkable success across numerous tasks, yet they remain vulnerable to Trojan (backdoor) attacks, raising serious concerns about their safety in real-world mission-critical applications. A common…

Computer Vision and Pattern Recognition · Computer Science 2025-07-31 Hossein Mirzaei , Zeinab Taghavi , Sepehr Rezaee , Masoud Hadi , Moein Madadi , Mackenzie W. Mathis

Machine learning models are increasingly present in our everyday lives; as a result, they become targets of adversarial attackers seeking to manipulate the systems we interact with. A well-known vulnerability is a backdoor introduced into a…

Machine Learning · Computer Science 2026-02-12 Enrico Ahlers , Daniel Passon , Yannic Noller , Lars Grunske

As society grows more reliant on machine learning, ensuring the security of machine learning systems against sophisticated attacks becomes a pressing concern. A recent result of Goldwasser, Kim, Vaikuntanathan, and Zamir (2022) shows that…

Machine Learning · Computer Science 2024-11-06 Shafi Goldwasser , Jonathan Shafer , Neekon Vafa , Vinod Vaikuntanathan

Multi-target backdoor attacks pose significant security threats to deep neural networks, as they can preset multiple target classes through a single backdoor injection. This allows attackers to control the model to misclassify poisoned…

Cryptography and Security · Computer Science 2026-03-10 Yangxu Yin , Honglong Chen , Yudong Gao , Peng Sun , Zhishuai Li , Weifeng Liu

\textbf{P}re-\textbf{T}rained \textbf{M}odel\textbf{s} have been widely applied and recently proved vulnerable under backdoor attacks: the released pre-trained weights can be maliciously poisoned with certain triggers. When the triggers are…

Cryptography and Security · Computer Science 2021-09-01 Linyang Li , Demin Song , Xiaonan Li , Jiehang Zeng , Ruotian Ma , Xipeng Qiu

Diffusion models have emerged as state-of-the-art generative frameworks, excelling in producing high-quality multi-modal samples. However, recent studies have revealed their vulnerability to backdoor attacks, where backdoored models…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Vu Tuan Truong , Long Bao Le

Current backdoor attacks against federated learning (FL) strongly rely on universal triggers or semantic patterns, which can be easily detected and filtered by certain defense mechanisms such as norm clipping, comparing parameter…

Machine Learning · Computer Science 2023-10-02 Yanqi Qiao , Dazhuang Liu , Congwen Chen , Rui Wang , Kaitai Liang

Deep neural networks (DNNs) are known to be vulnerable to both backdoor attacks as well as adversarial attacks. In the literature, these two types of attacks are commonly treated as distinct problems and solved separately, since they belong…

Computer Vision and Pattern Recognition · Computer Science 2022-12-29 Bingxu Mu , Zhenxing Niu , Le Wang , Xue Wang , Rong Jin , Gang Hua

Deep neural networks (DNNs) are vulnerable to backdoor attacks, where adversaries can maliciously trigger model misclassifications by implanting a hidden backdoor during model training. This paper proposes a simple yet effective input-level…

Machine Learning · Computer Science 2024-06-04 Linshan Hou , Ruili Feng , Zhongyun Hua , Wei Luo , Leo Yu Zhang , Yiming Li

Early backdoor attacks against machine learning set off an arms race in attack and defence development. Defences have since appeared demonstrating some ability to detect backdoors in models or even remove them. These defences work by…

Machine Learning · Computer Science 2024-06-03 Eleanor Clifford , Ilia Shumailov , Yiren Zhao , Ross Anderson , Robert Mullins

Backdoor attack intends to embed hidden backdoor into deep neural networks (DNNs), such that the attacked model performs well on benign samples, whereas its prediction will be maliciously changed if the hidden backdoor is activated by the…

Cryptography and Security · Computer Science 2022-04-13 Shaik Mohammed Maqsood , Viveros Manuela Ceron , Addluri GowthamKrishna

Neural networks are widely known to be vulnerable to backdoor attacks, a method that poisons a portion of the training data to make the target model perform well on normal data sets, while outputting attacker-specified or random categories…

Computer Vision and Pattern Recognition · Computer Science 2024-06-07 Yong Li , Han Gao

Many existing adversarial attacks generate $L_p$-norm perturbations on image RGB space. Despite some achievements in transferability and attack success rate, the crafted adversarial examples are easily perceived by human eyes. Towards…

Computer Vision and Pattern Recognition · Computer Science 2023-12-01 Jianqi Chen , Hao Chen , Keyan Chen , Yilan Zhang , Zhengxia Zou , Zhenwei Shi

A variety of defenses have been proposed against Trojans planted in (backdoor attacks on) deep neural network (DNN) classifiers. Backdoor-agnostic methods seek to reliably detect and/or to mitigate backdoors irrespective of the…

Cryptography and Security · Computer Science 2025-03-10 Guangmingmei Yang , Xi Li , Hang Wang , David J. Miller , George Kesidis

Recent works have demonstrated that deep learning models are vulnerable to backdoor poisoning attacks, where these attacks instill spurious correlations to external trigger patterns or objects (e.g., stickers, sunglasses, etc.). We find…

Computer Vision and Pattern Recognition · Computer Science 2022-07-25 Tong Wu , Tianhao Wang , Vikash Sehwag , Saeed Mahloujifar , Prateek Mittal

Deep neural networks (DNNs) are vulnerable to backdoor attacks, where adversaries embed a hidden backdoor trigger during the training process for malicious prediction manipulation. These attacks pose great threats to the applications of…

Cryptography and Security · Computer Science 2023-02-21 Junfeng Guo , Yiming Li , Xun Chen , Hanqing Guo , Lichao Sun , Cong Liu

Despite strong empirical performance for image classification, deep neural networks are often regarded as ``black boxes'' and they are difficult to interpret. On the other hand, sparse convolutional models, which assume that a signal can be…

Computer Vision and Pattern Recognition · Computer Science 2022-10-25 Xili Dai , Mingyang Li , Pengyuan Zhai , Shengbang Tong , Xingjian Gao , Shao-Lun Huang , Zhihui Zhu , Chong You , Yi Ma