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Backdoor attacks are emerging threats to deep neural networks, which typically embed malicious behaviors into a victim model by injecting poisoned samples. Adversaries can activate the injected backdoor during inference by presenting the…

Cryptography and Security · Computer Science 2025-12-05 Bingyin Zhao , Yingjie Lao

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

The widespread adoption of deep learning across various industries has introduced substantial challenges, particularly in terms of model explainability and security. The inherent complexity of deep learning models, while contributing to…

Cryptography and Security · Computer Science 2025-01-08 Kealan Dunnett , Reza Arablouei , Dimity Miller , Volkan Dedeoglu , Raja Jurdak

Federated Learning (FL) allows multiple clients to collaboratively train a Neural Network (NN) model on their private data without revealing the data. Recently, several targeted poisoning attacks against FL have been introduced. These…

Cryptography and Security · Computer Science 2022-01-04 Phillip Rieger , Thien Duc Nguyen , Markus Miettinen , Ahmad-Reza Sadeghi

Backdoor attacks are among the most effective, practical, and stealthy attacks in deep learning. In this paper, we consider a practical scenario where a developer obtains a deep model from a third party and uses it as part of a…

Cryptography and Security · Computer Science 2025-03-28 Dorde Popovic , Amin Sadeghi , Ting Yu , Sanjay Chawla , Issa Khalil

Data reconstruction attacks on machine learning models pose a substantial threat to privacy, potentially leaking sensitive information. Although defending against such attacks using differential privacy (DP) provides theoretical guarantees,…

Machine Learning · Computer Science 2025-03-11 Kristian Schwethelm , Johannes Kaiser , Moritz Knolle , Sarah Lockfisch , Daniel Rueckert , Alexander Ziller

Backdoor attacks pose a significant security vulnerability for deep neural networks (DNNs), enabling them to operate normally on clean inputs but manipulate predictions when specific trigger patterns occur. Currently, post-training backdoor…

Cryptography and Security · Computer Science 2024-10-22 Yanghao Su , Jie Zhang , Ting Xu , Tianwei Zhang , Weiming Zhang , Nenghai Yu

Diffusion models (DMs) have been investigated in various domains due to their ability to generate high-quality data, thereby attracting significant attention. However, similar to traditional deep learning systems, there also exist potential…

Cryptography and Security · Computer Science 2025-09-30 Kang Wei , Xin Yuan , Fushuo Huo , Chuan Ma , Long Yuan , Songze Li , Ming Ding , Dacheng Tao

Diffusion-based purification defenses leverage diffusion models to remove crafted perturbations of adversarial examples and achieve state-of-the-art robustness. Recent studies show that even advanced attacks cannot break such defenses…

Cryptography and Security · Computer Science 2024-01-05 Mintong Kang , Dawn Song , Bo Li

Backdoor attacks represent a subtle yet effective class of cyberattacks targeting AI models, primarily due to their stealthy nature. The model behaves normally on clean data but exhibits malicious behavior only when the attacker embeds a…

Machine Learning · Computer Science 2025-09-29 Sujeevan Aseervatham , Achraf Kerzazi , Younès Bennani

The commercialization of text-to-image diffusion models (DMs) brings forth potential copyright concerns. Despite numerous attempts to protect DMs from copyright issues, the vulnerabilities of these solutions are underexplored. In this…

Cryptography and Security · Computer Science 2024-05-28 Haonan Wang , Qianli Shen , Yao Tong , Yang Zhang , Kenji Kawaguchi

While Deep Neural Networks (DNNs) excel in many tasks, the huge training resources they require become an obstacle for practitioners to develop their own models. It has become common to collect data from the Internet or hire a third party…

Machine Learning · Computer Science 2022-03-15 Pengfei Xia , Hongjing Niu , Ziqiang Li , Bin Li

The training phase of machine learning models is a delicate step, especially in cybersecurity contexts. Recent research has surfaced a series of insidious training-time attacks that inject backdoors in models designed for security…

Cryptography and Security · Computer Science 2025-05-06 Giorgio Severi , Simona Boboila , John Holodnak , Kendra Kratkiewicz , Rauf Izmailov , Michael J. De Lucia , Alina Oprea

Diffusion Models (DMs) have achieved remarkable success in image generation, yet recent studies reveal their vulnerability to backdoor attacks, where adversaries manipulate outputs via covert triggers embedded in inputs. Existing defenses,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-08 Lei Zhang , Yu Pan , Bingrong Dai , Lin Wang

The goal of federated learning (FL) is to train one global model by aggregating model parameters updated independently on edge devices without accessing users' private data. However, FL is susceptible to backdoor attacks where a small…

Cryptography and Security · Computer Science 2022-02-24 Yein Kim , Huili Chen , Farinaz Koushanfar

Adversarial examples for diffusion models are widely used as solutions for safety concerns. By adding adversarial perturbations to personal images, attackers can not edit or imitate them easily. However, it is essential to note that all…

Computer Vision and Pattern Recognition · Computer Science 2024-05-03 Haotian Xue , Yongxin Chen

Many backdoor removal techniques in machine learning models require clean in-distribution data, which may not always be available due to proprietary datasets. Model inversion techniques, often considered privacy threats, can reconstruct…

Computer Vision and Pattern Recognition · Computer Science 2023-03-27 Si Chen , Yi Zeng , Jiachen T. Wang , Won Park , Xun Chen , Lingjuan Lyu , Zhuoqing Mao , Ruoxi Jia

Public resources and services (e.g., datasets, training platforms, pre-trained models) have been widely adopted to ease the development of Deep Learning-based applications. However, if the third-party providers are untrusted, they can…

Cryptography and Security · Computer Science 2024-01-10 Han Qiu , Yi Zeng , Shangwei Guo , Tianwei Zhang , Meikang Qiu , Bhavani Thuraisingham

Backdoor attacks become a significant security concern for deep neural networks in recent years. An image classification model can be compromised if malicious backdoors are injected into it. This corruption will cause the model to function…

Cryptography and Security · Computer Science 2024-03-13 Hongwei Zhang , Xiaoyin Xu , Dongsheng An , Xianfeng Gu , Min Zhang

Pre-trained Language Models (PLMs) may be poisonous with backdoors or bias injected by the suspicious attacker during the fine-tuning process. A core challenge of purifying potentially poisonous PLMs is precisely finding poisonous…

Computation and Language · Computer Science 2023-05-09 Zhiyuan Zhang , Deli Chen , Hao Zhou , Fandong Meng , Jie Zhou , Xu Sun