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3D deep learning has been increasingly more popular for a variety of tasks including many safety-critical applications. However, recently several works raise the security issues of 3D deep models. Although most of them consider adversarial…

机器学习 · 计算机科学 2025-05-09 Xinke Li , Zhirui Chen , Yue Zhao , Zekun Tong , Yabang Zhao , Andrew Lim , Joey Tianyi Zhou

Backdoor attacks undermine the integrity of machine learning models by allowing attackers to manipulate predictions using poisoned training data. Such attacks lead to targeted misclassification when specific triggers are present, while the…

密码学与安全 · 计算机科学 2025-02-12 Shaokui Wei , Jiayin Liu , Hongyuan Zha

Contextual priming, where earlier stimuli covertly bias later judgments, offers an unexplored attack surface for large language models (LLMs). We uncover a contextual priming vulnerability in which the previous response in the dialogue can…

计算与语言 · 计算机科学 2025-11-24 Ziqi Miao , Lijun Li , Yuan Xiong , Zhenhua Liu , Pengyu Zhu , Jing Shao

Low-Rank Adaptation (LoRA) has gained popularity for fine-tuning large foundation models, leveraging low-rank matrices $\mathbf{A}$ and $\mathbf{B}$ to represent weight changes (i.e., $\Delta \mathbf{W} = \mathbf{B} \mathbf{A}$). This…

机器学习 · 计算机科学 2025-07-02 Aochuan Chen , Jiashun Cheng , Zijing Liu , Ziqi Gao , Fugee Tsung , Yu Li , Jia Li

Large visual language models (LVLMs) have demonstrated excellent instruction-following capabilities, yet remain vulnerable to stealthy backdoor attacks when finetuned using contaminated data. Existing backdoor defense techniques are usually…

密码学与安全 · 计算机科学 2025-06-09 Yuan Xun , Siyuan Liang , Xiaojun Jia , Xinwei Liu , Xiaochun Cao

With the widespread application of deep learning across various domains, concerns about its security have grown significantly. Among these, backdoor attacks pose a serious security threat to deep neural networks (DNNs). In recent years,…

密码学与安全 · 计算机科学 2024-03-21 Wenmin Chen , Xiaowei Xu

Graph Neural Networks (GNNs) are a class of deep learning-based methods for processing graph domain information. GNNs have recently become a widely used graph analysis method due to their superior ability to learn representations for…

密码学与安全 · 计算机科学 2024-12-10 Jing Xu , Rui Wang , Stefanos Koffas , Kaitai Liang , Stjepan Picek

Low-Rank Adaptation (LoRA), a parameter-efficient fine-tuning method that leverages low-rank adaptation of weight matrices, has emerged as a prevalent technique for fine-tuning pre-trained models such as large language models and diffusion…

机器学习 · 计算机科学 2024-03-19 Yuchen Zeng , Kangwook Lee

Language Models (LMs) typically adhere to a "pre-training and fine-tuning" paradigm, where a universal pre-trained model can be fine-tuned to cater to various specialized domains. Low-Rank Adaptation (LoRA) has gained the most widespread…

密码学与安全 · 计算机科学 2025-07-25 Delong Ran , Xinlei He , Tianshuo Cong , Anyu Wang , Qi Li , Xiaoyun Wang

Large Language Models (LLMs), despite their impressive capabilities across domains, have been shown to be vulnerable to backdoor attacks. Prior backdoor strategies predominantly operate at the token level, where an injected trigger causes…

密码学与安全 · 计算机科学 2026-04-17 Vu Tuan Truong , Long Bao Le

Deep learning-based face restoration models, increasingly prevalent in smart devices, have become targets for sophisticated backdoor attacks. These attacks, through subtle trigger injection into input face images, can lead to unexpected…

计算机视觉与模式识别 · 计算机科学 2025-04-09 Zhenbo Song , Wenhao Gao , Zhenyuan Zhang , Jianfeng Lu

Low-Rank Adaptation (LoRA) has emerged as a highly efficient framework for finetuning the weights of large foundation models, and has become the go-to method for data-driven customization of LLMs. Despite the promise of highly customized…

The field of few-shot learning (FSL) has shown promising results in scenarios where training data is limited, but its vulnerability to backdoor attacks remains largely unexplored. We first explore this topic by first evaluating the…

密码学与安全 · 计算机科学 2024-01-04 Xinwei Liu , Xiaojun Jia , Jindong Gu , Yuan Xun , Siyuan Liang , Xiaochun Cao

Large language models (LLMs) remain vulnerable to jailbreak attacks that bypass safety guardrails to elicit harmful outputs. Existing approaches overwhelmingly operate within the prompt-optimization paradigm: whether through traditional…

密码学与安全 · 计算机科学 2025-12-18 Rongzhe Wei , Peizhi Niu , Xinjie Shen , Tony Tu , Yifan Li , Ruihan Wu , Eli Chien , Pin-Yu Chen , Olgica Milenkovic , Pan Li

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…

计算机视觉与模式识别 · 计算机科学 2023-03-01 Yi Yu , Yufei Wang , Wenhan Yang , Shijian Lu , Yap-peng Tan , Alex C. Kot

Deep neural networks are vulnerable to backdoor attacks, a type of adversarial attack that poisons the training data to manipulate the behavior of models trained on such data. Clean-label attacks are a more stealthy form of backdoor attacks…

Modern vision-language-model (VLM) based graphical user interface (GUI) agents are expected not only to execute actions accurately but also to respond to user instructions with low latency. While existing research on GUI-agent security…

密码学与安全 · 计算机科学 2026-03-11 Junxian Li , Tu Lan , Haozhen Tan , Yan Meng , Haojin Zhu

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…

机器学习 · 计算机科学 2023-10-02 Yanqi Qiao , Dazhuang Liu , Congwen Chen , Rui Wang , Kaitai Liang

Backdoor attack aims at inducing neural models to make incorrect predictions for poison data while keeping predictions on the clean dataset unchanged, which creates a considerable threat to current natural language processing (NLP) systems.…

计算与语言 · 计算机科学 2023-03-28 Xukun Zhou , Jiwei Li , Tianwei Zhang , Lingjuan Lyu , Muqiao Yang , Jun He

Federated learning (FL) remains highly vulnerable to adaptive backdoor attacks that preserve stealth by closely imitating benign update statistics. Existing defenses predominantly rely on anomaly detection in parameter or gradient space,…

机器学习 · 计算机科学 2026-02-13 Chibueze Peace Obioma , Youcheng Sun , Mustafa A. Mustafa