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Multimodal learning integrates information from different modalities to enhance model performance, yet it often suffers from modality imbalance, where dominant modalities overshadow weaker ones during joint optimization. This paper reveals…

机器学习 · 计算机科学 2025-10-17 Xiaoyu Ma , Hao Chen

The advent of multimodal deep learning models, such as CLIP, has unlocked new frontiers in a wide range of applications, from image-text understanding to classification tasks. However, these models are not safe for adversarial attacks,…

计算机视觉与模式识别 · 计算机科学 2025-11-18 Md. Iqbal Hossain , Afia Sajeeda , Neeresh Kumar Perla , Ming Shao

Backdoor attacks, in which a model behaves maliciously when given an attacker-specified trigger, pose a major security risk for practitioners who depend on publicly released language models. As a countermeasure, backdoor detection methods…

计算与语言 · 计算机科学 2025-09-23 Jun Yan , Wenjie Jacky Mo , Xiang Ren , Robin Jia

As object detection becomes integral to many safety-critical applications, understanding its vulnerabilities is essential. Backdoor attacks, in particular, pose a serious threat by implanting hidden triggers in victim models, which…

密码学与安全 · 计算机科学 2025-03-14 Jialin Lu , Junjie Shan , Ziqi Zhao , Ka-Ho Chow

As object detection becomes integral to many safety-critical applications, understanding its vulnerabilities is essential. Backdoor attacks, in particular, pose a serious threat by implanting hidden triggers in victim models, which…

密码学与安全 · 计算机科学 2025-03-17 Jialin Lu , Junjie Shan , Ziqi Zhao , Ka-Ho Chow

Multi-modal models have shown a promising capability to effectively integrate information from various sources, yet meanwhile, they are found vulnerable to pervasive perturbations, such as uni-modal attacks and missing conditions. To…

计算机视觉与模式识别 · 计算机科学 2024-04-19 Zequn Yang , Yake Wei , Ce Liang , Di Hu

As text-to-image diffusion models become increasingly deployed in real-world applications, concerns about backdoor attacks have gained significant attention. Prior work on text-based backdoor attacks has largely focused on diffusion models…

机器学习 · 计算机科学 2026-03-05 Ziyuan Chen , Yujin Jeong , Tobias Braun , Anna Rohrbach

Multimodal contrastive learning has emerged as a powerful paradigm for building high-quality features using the complementary strengths of various data modalities. However, the open nature of such systems inadvertently increases the…

计算机视觉与模式识别 · 计算机科学 2024-03-26 Siyuan Liang , Kuanrong Liu , Jiajun Gong , Jiawei Liang , Yuan Xun , Ee-Chien Chang , Xiaochun Cao

Omni-modal Large Language Models (OLLMs) greatly expand LLMs' multimodal capabilities but also introduce cross-modal safety risks. However, a systematic understanding of vulnerabilities in omni-modal interactions remains lacking. To bridge…

密码学与安全 · 计算机科学 2026-02-12 Kun Wang , Zherui Li , Zhenhong Zhou , Yitong Zhang , Yan Mi , Kun Yang , Yiming Zhang , Junhao Dong , Zhongxiang Sun , Qiankun Li , Yang Liu

Diffusion-based generative modeling has been achieving state-of-the-art results on various generation tasks. Most diffusion models, however, are limited to a single-generation modeling. Can we generalize diffusion models with the ability of…

计算机视觉与模式识别 · 计算机科学 2024-09-26 Changyou Chen , Han Ding , Bunyamin Sisman , Yi Xu , Ouye Xie , Benjamin Z. Yao , Son Dinh Tran , Belinda Zeng

Unified autoregressive models (UAMs) are transformer models that generate text as well as image tokens within a single autoregressive pass. Shared parameters and a multimodal vocabulary simplify the training pipeline and facilitate flexible…

密码学与安全 · 计算机科学 2026-05-20 Tobias Braun , Jonas Henry Grebe , Hossein Shakibania , Anna Rohrbach , Marcus Rohrbach

Multi-modal models have gained significant attention due to their powerful capabilities. These models effectively align embeddings across diverse data modalities, showcasing superior performance in downstream tasks compared to their…

密码学与安全 · 计算机科学 2024-09-25 Zhihao Dou , Xin Hu , Haibo Yang , Zhuqing Liu , Minghong Fang

The growing misuse of Vision-Language Models (VLMs) has led providers to deploy multiple safeguards, including alignment tuning, system prompts, and content moderation. However, the real-world robustness of these defenses against…

密码学与安全 · 计算机科学 2025-11-21 Yijun Yang , Lichao Wang , Jianping Zhang , Chi Harold Liu , Lanqing Hong , Qiang Xu

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

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…

密码学与安全 · 计算机科学 2025-03-28 Dorde Popovic , Amin Sadeghi , Ting Yu , Sanjay Chawla , Issa Khalil

Multimodal contrastive learning uses various data modalities to create high-quality features, but its reliance on extensive data sources on the Internet makes it vulnerable to backdoor attacks. These attacks insert malicious behaviors…

密码学与安全 · 计算机科学 2024-10-01 Kuanrong Liu , Siyuan Liang , Jiawei Liang , Pengwen Dai , Xiaochun Cao

Consistency models are a new class of models that generate images by directly mapping noise to data, allowing for one-step generation and significantly accelerating the sampling process. However, their robustness against adversarial attacks…

密码学与安全 · 计算机科学 2025-02-18 Chengen Wang , Murat Kantarcioglu

Backdoor attacks mislead machine-learning models to output an attacker-specified class when presented a specific trigger at test time. These attacks require poisoning the training data to compromise the learning algorithm, e.g., by…

机器学习 · 计算机科学 2021-11-03 Kathrin Grosse , Taesung Lee , Battista Biggio , Youngja Park , Michael Backes , Ian Molloy

Aggregating multi-modality data to obtain reliable data representation attracts more and more attention. Recent studies demonstrate that Transformer models usually work well for multi-modality tasks. Existing Transformers generally either…

计算机视觉与模式识别 · 计算机科学 2023-03-17 Xixi Wang , Xiao Wang , Bo Jiang , Jin Tang , Bin Luo

Many modern multi-modal models (e.g. CLIP) seek an embedding space in which the two modalities are aligned. Somewhat surprisingly, almost all existing models show a strong modality gap: the distribution of images is well-separated from the…

计算机视觉与模式识别 · 计算机科学 2026-04-29 Rhea Chowers , Oshri Naparstek , Udi Barzelay , Yair Weiss