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Recent studies have widely investigated backdoor attacks on Large Language Models (LLMs) by inserting harmful question-answer (QA) pairs into their training data. However, we revisit existing attacks and identify two critical limitations:…

计算与语言 · 计算机科学 2025-10-07 Jiawei Kong , Hao Fang , Xiaochen Yang , Kuofeng Gao , Bin Chen , Shu-Tao Xia , Ke Xu , Han Qiu

Deep learning models have been deployed in numerous real-world applications such as autonomous driving and surveillance. However, these models are vulnerable in adversarial environments. Backdoor attack is emerging as a severe security…

计算机视觉与模式识别 · 计算机科学 2022-05-31 Shih-Han Chan , Yinpeng Dong , Jun Zhu , Xiaolu Zhang , Jun Zhou

Backdoor attacks pose a significant threat to deep neural networks, as backdoored models would misclassify poisoned samples with specific triggers into target classes while maintaining normal performance on clean samples. Among these,…

密码学与安全 · 计算机科学 2025-08-06 Yangxu Yin , Honglong Chen , Yudong Gao , Peng Sun , Liantao Wu , Zhe Li , Weifeng Liu

In recent years, there has been an explosive growth in multimodal learning. Image captioning, a classical multimodal task, has demonstrated promising applications and attracted extensive research attention. However, recent studies have…

密码学与安全 · 计算机科学 2024-06-11 Wenshu Fan , Hongwei Li , Wenbo Jiang , Meng Hao , Shui Yu , Xiao Zhang

Modern face recognition systems (FRS) still fall short when the subjects are wearing facial masks, a common theme in the age of respiratory pandemics. An intuitive partial remedy is to add a mask detector to flag any masked faces so that…

计算机视觉与模式识别 · 计算机科学 2022-04-13 Jiayi Zhu , Qing Guo , Felix Juefei-Xu , Yihao Huang , Yang Liu , Geguang Pu

Recent advances in Machine Learning (ML) have opened up new avenues for its extensive use in real-world applications. Facial recognition, specifically, is used from simple friend suggestions in social-media platforms to critical security…

计算机视觉与模式识别 · 计算机科学 2020-06-23 Esha Sarkar , Hadjer Benkraouda , Michail Maniatakos

Deep neural networks (DNNs) have been widely and successfully adopted and deployed in various applications of speech recognition. Recently, a few works revealed that these models are vulnerable to backdoor attacks, where the adversaries can…

声音 · 计算机科学 2023-07-18 Hanbo Cai , Pengcheng Zhang , Hai Dong , Yan Xiao , Stefanos Koffas , Yiming Li

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…

计算机视觉与模式识别 · 计算机科学 2023-06-12 Sheng-Yen Chou , Pin-Yu Chen , Tsung-Yi Ho

Manipulated videos, especially those where the identity of an individual has been modified using deep neural networks, are becoming an increasingly relevant threat in the modern day. In this paper, we seek to develop a generalizable,…

计算机视觉与模式识别 · 计算机科学 2021-09-23 Steven Schwarcz , Rama Chellappa

Self-supervised and multimodal vision encoders learn strong visual representations that are widely adopted in downstream vision tasks and large vision-language models (LVLMs). However, downstream users often rely on third-party pretrained…

计算机视觉与模式识别 · 计算机科学 2026-03-17 Siquan Huang , Yijiang Li , Ningzhi Gao , Xingfu Yan , Leyu Shi , Ying Gao

Pervasive backdoors are triggered by dynamic and pervasive input perturbations. They can be intentionally injected by attackers or naturally exist in normally trained models. They have a different nature from the traditional static and…

密码学与安全 · 计算机科学 2022-06-22 Guanhong Tao , Yingqi Liu , Siyuan Cheng , Shengwei An , Zhuo Zhang , Qiuling Xu , Guangyu Shen , Xiangyu Zhang

Backdoor attacks insert malicious data into a training set so that, during inference time, it misclassifies inputs that have been patched with a backdoor trigger as the malware specified label. For backdoor attacks to bypass human…

密码学与安全 · 计算机科学 2022-04-18 Yi Zeng , Minzhou Pan , Hoang Anh Just , Lingjuan Lyu , Meikang Qiu , Ruoxi Jia

Voice authentication systems remain susceptible to two major threats: backdoor triggered attacks and targeted data poisoning attacks. This dual vulnerability is critical because conventional solutions typically address each threat type…

密码学与安全 · 计算机科学 2025-05-07 Alireza Mohammadi , Keshav Sood , Dhananjay Thiruvady , Asef Nazari

Deep Learning-based image synthesis techniques have been applied in healthcare research for generating medical images to support open research. Training generative adversarial neural networks (GAN) usually requires large amounts of training…

计算机视觉与模式识别 · 计算机科学 2022-08-02 Ruinan Jin , Xiaoxiao Li

With the great development of generative model techniques, face forgery detection draws more and more attention in the related field. Researchers find that existing face forgery models are still vulnerable to adversarial examples with…

计算机视觉与模式识别 · 计算机科学 2024-06-18 Decheng Liu , Qixuan Su , Chunlei Peng , Nannan Wang , Xinbo Gao

Outsourced deep neural networks have been demonstrated to suffer from patch-based trojan attacks, in which an adversary poisons the training sets to inject a backdoor in the obtained model so that regular inputs can be still labeled…

密码学与安全 · 计算机科学 2022-05-17 Ying He , Zhili Shen , Chang Xia , Jingyu Hua , Wei Tong , Sheng Zhong

Recently, it has been shown that deep learning models are vulnerable to Trojan attacks, where an attacker can install a backdoor during training time to make the resultant model misidentify samples contaminated with a small trigger patch.…

计算机视觉与模式识别 · 计算机科学 2020-06-11 Haripriya Harikumar , Vuong Le , Santu Rana , Sourangshu Bhattacharya , Sunil Gupta , Svetha Venkatesh

Deep Learning-based image synthesis techniques have been applied in healthcare research for generating medical images to support open research and augment medical datasets. Training generative adversarial neural networks (GANs) usually…

计算机视觉与模式识别 · 计算机科学 2023-07-18 Ruinan Jin , Xiaoxiao Li

While machine learning (ML) models are being increasingly trusted to make decisions in different and varying areas, the safety of systems using such models has become an increasing concern. In particular, ML models are often trained on data…

Backdoor attacks threaten Deep Neural Networks (DNNs). Towards stealthiness, researchers propose clean-label backdoor attacks, which require the adversaries not to alter the labels of the poisoned training datasets. Clean-label settings…

密码学与安全 · 计算机科学 2022-06-13 Nan Luo , Yuanzhang Li , Yajie Wang , Shangbo Wu , Yu-an Tan , Quanxin Zhang