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Diffusion language models (DLMs) have recently emerged as an alternative modeling paradigm to autoregressive (AR) language models, enabling parallel generation and bidirectional context modeling. Yet their security implications,…

Cryptography and Security · Computer Science 2026-05-12 Shengfang Zhai , Xiaoyang Ji , Yuling Shi , Haoran Gao , Fanyu Meng , Yan Zeng , Yuejian Fang , Yinpeng Dong , Jiaheng Zhang

Recent advances in GAN and diffusion models have significantly improved the realism and controllability of facial deepfake manipulation, raising serious concerns regarding privacy, security, and identity misuse. Proactive defenses attempt…

Cryptography and Security · Computer Science 2026-04-03 Yue Li , Linying Xue , Kaiqing Lin , Hanyu Quan , Dongdong Lin , Hui Tian , Hongxia Wang , Bin Wang

One major goal of the AI security community is to securely and reliably produce and deploy deep learning models for real-world applications. To this end, data poisoning based backdoor attacks on deep neural networks (DNNs) in the production…

Cryptography and Security · Computer Science 2022-05-30 Xiangyu Qi , Tinghao Xie , Ruizhe Pan , Jifeng Zhu , Yong Yang , Kai Bu

Given the need to evaluate the robustness of face recognition (FR) models, many efforts have focused on adversarial patch attacks that mislead FR models by introducing localized perturbations. Impersonation attacks are a significant threat…

Computer Vision and Pattern Recognition · Computer Science 2025-02-28 Mingsi Wang , Shuaiyin Yao , Chang Yue , Lijie Zhang , Guozhu Meng

We address the problem of learning person-specific facial priors from a small number (e.g., 20) of portrait photos of the same person. This enables us to edit this specific person's facial appearance, such as expression and lighting, while…

Computer Vision and Pattern Recognition · Computer Science 2023-04-14 Zheng Ding , Xuaner Zhang , Zhihao Xia , Lars Jebe , Zhuowen Tu , Xiuming Zhang

Nine-degrees-of-freedom (9-DoF) object pose and size estimation is crucial for enabling augmented reality and robotic manipulation. Category-level methods have received extensive research attention due to their potential for generalization…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Jian Liu , Wei Sun , Hui Yang , Pengchao Deng , Chongpei Liu , Nicu Sebe , Hossein Rahmani , Ajmal Mian

Diffusion models recently have been successfully applied for the visual synthesis of strikingly realistic appearing images. This raises strong concerns about their potential for malicious purposes. In this paper, we propose using the…

Computer Vision and Pattern Recognition · Computer Science 2023-09-29 Peter Lorenz , Ricard Durall , Janis Keuper

Diffusion models have recently gained significant attention in both academia and industry due to their impressive generative performance in terms of both sampling quality and distribution coverage. Accordingly, proposals are made for…

Machine Learning · Computer Science 2024-09-20 Xinjian Luo , Yangfan Jiang , Fei Wei , Yuncheng Wu , Xiaokui Xiao , Beng Chin Ooi

Adversarial attacks exploiting unrestricted natural perturbations present severe security risks to deep learning systems, yet their transferability across models remains limited due to distribution mismatches between generated adversarial…

Computer Vision and Pattern Recognition · Computer Science 2025-05-23 Yuhao Xue , Zhifei Zhang , Xinyang Jiang , Yifei Shen , Junyao Gao , Wentao Gu , Jiale Zhao , Miaojing Shi , Cairong Zhao

Text-to-image diffusion models (T2I DMs) have achieved remarkable success in generating high-quality and diverse images from text prompts, yet recent studies have revealed their vulnerability to backdoor attacks. Existing attack methods…

Cryptography and Security · Computer Science 2025-08-05 Haoran Dai , Jiawen Wang , Ruo Yang , Manali Sharma , Zhonghao Liao , Yuan Hong , Binghui Wang

Skeleton Action Recognition (SAR) has attracted significant interest for its efficient representation of the human skeletal structure. Despite its advancements, recent studies have raised security concerns in SAR models, particularly their…

Cryptography and Security · Computer Science 2024-08-19 Qichen Zheng , Yi Yu , Siyuan Yang , Jun Liu , Kwok-Yan Lam , Alex Kot

Deep neural networks have significantly improved the performance of face forgery detection models in discriminating Artificial Intelligent Generated Content (AIGC). However, their security is significantly threatened by the injection of…

Computer Vision and Pattern Recognition · Computer Science 2024-01-02 Xiaoxuan Han , Songlin Yang , Wei Wang , Ziwen He , Jing Dong

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

Backdoor attacks pose a significant threat to the training process of deep neural networks (DNNs). As a widely-used DNN-based application in real-world scenarios, face recognition systems once implanted into the backdoor, may cause serious…

Computer Vision and Pattern Recognition · Computer Science 2024-08-23 Ming Sun , Lihua Jing , Zixuan Zhu , Rui Wang

Recent years have witnessed the tremendous success of diffusion models in data synthesis. However, when diffusion models are applied to sensitive data, they also give rise to severe privacy concerns. In this paper, we systematically present…

Cryptography and Security · Computer Science 2023-01-25 Hailong Hu , Jun Pang

Person re-identification plays a significant role in realistic scenarios due to its various applications in public security and video surveillance. Recently, leveraging the supervised or semi-unsupervised learning paradigms, which benefits…

Computer Vision and Pattern Recognition · Computer Science 2023-01-02 Suncheng Xiang , Hao Chen , Wei Ran , Zefang Yu , Ting Liu , Dahong Qian , Yuzhuo Fu

Traditional distributed backdoor attacks (DBA) in federated learning improve stealthiness by decomposing global triggers into sub-triggers, which however requires more poisoned data to maintian the attck strength and hence increases the…

Cryptography and Security · Computer Science 2025-11-13 Jian Wang , Hong Shen , Chan-Tong Lam

Text-to-image generation for personalized identities aims at incorporating the specific identity into images using a text prompt and an identity image. Based on the powerful generative capabilities of DDPMs, many previous works adopt…

Computer Vision and Pattern Recognition · Computer Science 2025-05-13 Jinyu Gu , Haipeng Liu , Meng Wang , Yang Wang

Generating human motion from textual descriptions is a challenging task. Existing methods either struggle with physical credibility or are limited by the complexities of physics simulations. In this paper, we present \emph{ReinDiffuse} that…

Computer Vision and Pattern Recognition · Computer Science 2024-10-16 Gaoge Han , Mingjiang Liang , Jinglei Tang , Yongkang Cheng , Wei Liu , Shaoli Huang

Synthetic data has emerged as a practical alternative to authentic face datasets for training face recognition (FR) systems, especially as privacy and legal concerns increasingly restrict the use of real biometric data. Recent advances in…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Fadi Boutros , Eduarda Caldeira , Tahar Chettaoui , Naser Damer