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We propose Gradient Inversion Transcript (GIT), a novel generative approach for reconstructing training data from leaked gradients. GIT employs a generative attack model, whose architecture is tailored to align with the structure of the…

Machine Learning · Computer Science 2025-05-27 Xinping Chen , Chen Liu

Recent works show that sensitive user data can be reconstructed from gradient updates, breaking the key privacy promise of federated learning. While success was demonstrated primarily on image data, these methods do not directly transfer to…

Machine Learning · Computer Science 2024-10-22 Lele Zheng , Yang Cao , Renhe Jiang , Kenjiro Taura , Yulong Shen , Sheng Li , Masatoshi Yoshikawa

This paper investigates the privacy-preserving distributed optimization problem, aiming to protect agents' private information from potential attackers during the optimization process. Gradient tracking, an advanced technique for improving…

Machine Learning · Computer Science 2025-09-24 Furan Xie , Bing Liu , Li Chai

Although diffusion-based techniques have shown remarkable success in image generation and editing tasks, their abuse can lead to severe negative social impacts. Recently, some works have been proposed to provide defense against the abuse of…

Computer Vision and Pattern Recognition · Computer Science 2025-03-10 Zheng Li , Liangbin Xie , Jiantao Zhou , Xintao Wang , Haiwei Wu , Jinyu Tian

Federated graph learning (FGL) has recently emerged as a promising privacy-preserving paradigm that enables distributed graph learning across multiple data owners. A critical privacy concern in federated learning is whether an adversary can…

Machine Learning · Computer Science 2026-01-28 Shuyue Wei , Wantong Chen , Tongyu Wei , Chen Gong , Yongxin Tong , Lizhen Cui

The proliferation of text-to-image diffusion models has raised significant privacy and security concerns, particularly regarding the generation of copyrighted or harmful images. In response, concept erasure (defense) methods have been…

Machine Learning · Computer Science 2025-10-06 Alex D. Richardson , Kaicheng Zhang , Lucas Beerens , Dongdong Chen

Recently, diffusion models have become popular tools for image synthesis because of their high-quality outputs. However, like other large-scale models, they may leak private information about their training data. Here, we demonstrate a…

Machine Learning · Computer Science 2023-12-11 Shuai Tang , Zhiwei Steven Wu , Sergul Aydore , Michael Kearns , Aaron Roth

Diffusion models have established new state of the art in a multitude of computer vision tasks, including image restoration. Diffusion-based inverse problem solvers generate reconstructions of exceptional visual quality from heavily…

Image and Video Processing · Electrical Eng. & Systems 2024-08-21 Zalan Fabian , Berk Tinaz , Mahdi Soltanolkotabi

Federated learning (FL) is a popular distributed learning framework that can reduce privacy risks by not explicitly sharing private data. However, recent works demonstrated that sharing model updates makes FL vulnerable to inference…

Machine Learning · Computer Science 2020-12-14 Jingwei Sun , Ang Li , Binghui Wang , Huanrui Yang , Hai Li , Yiran Chen

While 3D head reconstruction is widely used for modeling, existing neural reconstruction approaches rely on high-resolution multi-view images, posing notable privacy issues. Individuals are particularly sensitive to facial features, and…

Computer Vision and Pattern Recognition · Computer Science 2025-05-02 Jiayi Kong , Xurui Song , Shuo Huai , Baixin Xu , Jun Luo , Ying He

Latent Diffusion Models (LDMs) enable a wide range of applications but raise ethical concerns regarding illegal utilization. Adding watermarks to generative model outputs is a vital technique employed for copyright tracking and mitigating…

Cryptography and Security · Computer Science 2025-06-02 Liangqi Lei , Keke Gai , Jing Yu , Liehuang Zhu

Federated learning enables multiple users to build a joint model by sharing their model updates (gradients), while their raw data remains local on their devices. In contrast to the common belief that this provides privacy benefits, we here…

With the rapid advancement of diffusion-based image-generative models, the quality of generated images has become increasingly photorealistic. Moreover, with the release of high-quality pre-trained image-generative models, a growing number…

Cryptography and Security · Computer Science 2024-09-06 Yan Pang , Tianhao Wang

Federated learning (FL) is a privacy-preserving machine learning framework that enables multiple nodes to train models on their local data and periodically average weight updates to benefit from other nodes' training. Each node's goal is to…

Machine Learning · Computer Science 2025-06-16 Ethan Wilson , Kai Yue , Chau-Wai Wong , Huaiyu Dai

With the rapid expansion of data lakes storing health data and hosting AI algorithms, a prominent concern arises: how safe is it to export machine learning models from these data lakes? In particular, deep network models, widely used for…

Cryptography and Security · Computer Science 2025-12-09 Huiyu Li , Nicholas Ayache , Hervé Delingette

Diffusion models have shown remarkable promise for image restoration by leveraging powerful priors. Prominent methods typically frame the restoration problem within a Bayesian inference framework, which iteratively combines a denoising step…

Computer Vision and Pattern Recognition · Computer Science 2025-09-04 Hongjie Wu , Mingqin Zhang , Linchao He , Ji-Zhe Zhou , Jiancheng Lv

Reconstruction attacks allow an adversary to regenerate data samples of the training set using access to only a trained model. It has been recently shown that simple heuristics can reconstruct data samples from language models, making this…

Machine Learning · Computer Science 2022-02-16 Pierre Stock , Igor Shilov , Ilya Mironov , Alexandre Sablayrolles

Deep learning models have been shown to be vulnerable to adversarial attacks. In particular, gradient-based attacks have demonstrated high success rates recently. The gradient measures how each image pixel affects the model output, which…

Computer Vision and Pattern Recognition · Computer Science 2022-02-03 Hanbin Hong , Yuan Hong , Yu Kong

Diffusion models are state-of-the-art deep learning empowered generative models that are trained based on the principle of learning forward and reverse diffusion processes via progressive noise-addition and denoising. To gain a better…

Computer Vision and Pattern Recognition · Computer Science 2023-06-12 Sheng-Yen Chou , Pin-Yu Chen , Tsung-Yi Ho

Gradient inversion attack enables recovery of training samples from model gradients in federated learning (FL), and constitutes a serious threat to data privacy. To mitigate this vulnerability, prior work proposed both principled defenses…

Machine Learning · Computer Science 2023-06-13 Ruihan Wu , Xiangyu Chen , Chuan Guo , Kilian Q. Weinberger