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Text-to-image diffusion models are increasingly developed through open-source reuse and repeated downstream fine-tuning, where reused checkpoints are difficult to verify and thus more susceptible to hidden backdoor behaviors. In such…

Cryptography and Security · Computer Science 2026-05-20 Kai Wang , Jiale Zhang , Chengcheng Zhu , Chuang Ma , Songze Li

Federated learning enables training high-utility models across several clients without directly sharing their private data. As a downside, the federated setting makes the model vulnerable to various adversarial attacks in the presence of…

Machine Learning · Computer Science 2024-03-12 Xiaoyang Wang , Dimitrios Dimitriadis , Sanmi Koyejo , Shruti Tople

In recent years, diffusion models have achieved remarkable success in the realm of high-quality image generation, garnering increased attention. This surge in interest is paralleled by a growing concern over the security threats associated…

Machine Learning · Computer Science 2024-06-04 Sen Li , Junchi Ma , Minhao Cheng

Adversarial attacks threaten the reliability of machine learning models in critical applications like autonomous vehicles and defense systems. As object detectors become more robust with models like YOLOv8, developing effective adversarial…

Computer Vision and Pattern Recognition · Computer Science 2025-04-14 Adonisz Dimitriu , Tamás Michaletzky , Viktor Remeli

Federated learning (FL) is a decentralized machine learning technique that allows multiple entities to jointly train a model while preserving dataset privacy. However, its distributed nature has raised various security concerns, which have…

Cryptography and Security · Computer Science 2025-01-06 Nuno Neves

Composed Image Retrieval (CIR) retrieves target images using a multi-modal query that combines a reference image with text describing desired modifications. The primary challenge is effectively fusing this visual and textual information.…

Computer Vision and Pattern Recognition · Computer Science 2025-04-16 Chaoyang Wang , Zeyu Zhang , Long Teng , Zijun Li , Shichao Kan

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

Surgical triplet recognition, which involves identifying instrument, verb, target, and their combinations, is a complex surgical scene understanding challenge plagued by long-tailed data distribution. The mainstream multi-task learning…

Computer Vision and Pattern Recognition · Computer Science 2025-09-17 Yiyi Zhang , Yuchen Yuan , Ying Zheng , Jialun Pei , Jinpeng Li , Zheng Li , Pheng-Ann Heng

This paper investigates the challenging task of detecting backdoored text-to-image models under black-box settings and introduces a novel detection framework BlackMirror. Existing approaches typically rely on analyzing image-level…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Feiran Li , Qianqian Xu , Shilong Bao , Zhiyong Yang , Xilin Zhao , Xiaochun Cao , Qingming Huang

Recent deep-learning-based compression methods have achieved superior performance compared with traditional approaches. However, deep learning models have proven to be vulnerable to backdoor attacks, where some specific trigger patterns…

Computer Vision and Pattern Recognition · Computer Science 2023-03-01 Yi Yu , Yufei Wang , Wenhan Yang , Shijian Lu , Yap-peng Tan , Alex C. Kot

This paper investigates how Backdoor Attacks are represented within Vision Transformers (ViTs). By assuming knowledge of the trigger, we identify a specific ``trigger direction'' in the model's activations that corresponds to the internal…

Computer Vision and Pattern Recognition · Computer Science 2026-03-12 Sengim Karayalcin , Marina Krcek , Pin-Yu Chen , Stjepan Picek

Current federated backdoor attacks focus on collaboratively training backdoor triggers, where multiple compromised clients train their local trigger patches and then merge them into a global trigger during the inference phase. However,…

Cryptography and Security · Computer Science 2025-02-25 Lingguag Hao , Kuangrong Hao , Bing Wei , Xue-song Tang

Neural rendering has advanced significantly in 3D reconstruction and novel view synthesis, and integrating physics into these frameworks opens new applications such as physically accurate digital twins for robotics and XR. However, the…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Daniel Rho , Jun Myeong Choi , Biswadip Dey , Roni Sengupta

Autoencoder permits the end-to-end optimization and design of wireless communication systems to be more beneficial than traditional signal processing. However, this emerging learning-based framework has weaknesses, especially sensitivity to…

Information Theory · Computer Science 2024-10-29 Bui Duc Son , Ngo Nam Khanh , Trinh Van Chien , Dong In Kim

Backdoor attacks are rapidly emerging threats to deep neural networks (DNNs). In the backdoor attack scenario, attackers usually implant the backdoor into the target model by manipulating the training dataset or training process. Then, the…

Cryptography and Security · Computer Science 2022-05-09 Nan Zhong , Zhenxing Qian , Xinpeng Zhang

Recently, violence detection systems developed using unified multimodal models have achieved significant success and attracted widespread attention. However, most of these systems face two critical challenges: the lack of interpretability…

Computer Vision and Pattern Recognition · Computer Science 2025-02-07 Wen-Dong Jiang , Chih-Yung Chang , Diptendu Sinha Roy

With the help of conditioning mechanisms, the state-of-the-art diffusion models have achieved tremendous success in guided image generation, particularly in text-to-image synthesis. To gain a better understanding of the training process and…

Cryptography and Security · Computer Science 2023-10-24 Shengfang Zhai , Yinpeng Dong , Qingni Shen , Shi Pu , Yuejian Fang , Hang Su

Backdoor attacks are a kind of emergent training-time threat to deep neural networks (DNNs). They can manipulate the output of DNNs and possess high insidiousness. In the field of natural language processing, some attack methods have been…

Computation and Language · Computer Science 2021-11-05 Fanchao Qi , Yangyi Chen , Mukai Li , Yuan Yao , Zhiyuan Liu , Maosong Sun

With the success of deep learning algorithms in various domains, studying adversarial attacks to secure deep models in real world applications has become an important research topic. Backdoor attacks are a form of adversarial attacks on…

Computer Vision and Pattern Recognition · Computer Science 2019-12-24 Aniruddha Saha , Akshayvarun Subramanya , Hamed Pirsiavash

Deep reinforcement learning (DRL) has achieved remarkable success in a wide range of sequential decision-making applications, including robotics, healthcare, smart grids, and finance. Recent studies reveal that adversaries can implant…

Cryptography and Security · Computer Science 2025-11-19 Mingxuan Zhang , Oubo Ma , Kang Wei , Songze Li , Shouling Ji
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