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Yun Shen

9 accepted papers

2026

When Understanding Becomes a Risk: Authenticity and Safety Risks in the Emerging Image Generation Paradigm

CVPR 2026

Recently, multimodal large language models (MLLMs) have emerged as a unified paradigm for language and image generation. Compared with diffusion models, MLLMs possess a much stronger capability for semantic understanding, enabling them to process more complex textual inputs and comprehend richer con

Cited by 0SourceScholar
2025

Breaking Agents: Compromising Autonomous LLM Agents Through Malfunction Amplification

EMNLP 2025

Recently, autonomous agents built on large language models (LLMs) have experienced significant development and are being deployed in real-world applications. Through the usage of tools, these systems can perform actions in the real world. Given the agents’ practical applications and ability to execu

2025

The Ripple Effect: On Unforeseen Complications of Backdoor Attacks

ICML 2025poster

Recent research highlights concerns about the trustworthiness of third-party Pre-Trained Language Models (PTLMs) due to potential backdoor attacks. These backdoored PTLMs, however, are effective only for specific pre-defined downstream tasks. In reality, these PTLMs can be adapted to many other unre…

2025

When GPT Spills the Tea: Comprehensive Assessment of Knowledge File Leakage in GPTs

ACL 2025long

Knowledge files have been widely used in large language model (LLM)-powered agents, such as GPTs, to improve response quality. However, concerns over the potential leakage of knowledge files have grown significantly. Existing studies demonstrate that adversarial prompts can induce GPTs to leak knowl…

Cited by 0SourcePDFScholar
2024

Composite Backdoor Attacks Against Large Language Models

NAACL 2024findings

Large language models (LLMs) have demonstrated superior performance compared to previous methods on various tasks, and often serve as the foundation models for many researches and services. However, the untrustworthy third-party LLMs may covertly introduce vulnerabilities for downstream tasks. In th…

2024

Unsupervised Learning of Facial Optical Flow via Occlusion-Aware Global-Local Matching

ICASSP 2024accepted

Estimating optical flow from facial videos is an essential preprocessing step for many applications. However, it is a challenging task as the facial videos contain rich expressions, large displacements, and complex occlusions. Obtaining the ground truth optical flow for facial videos is very difficu…

Cited by 0SourceScholar
2022

Amplifying Membership Exposure via Data Poisoning

NeurIPS 2022accept

As in-the-wild data are increasingly involved in the training stage, machine learning applications become more susceptible to data poisoning attacks. Such attacks typically lead to test-time accuracy degradation or controlled misprediction. In this paper, we investigate the third type of exploitatio…

2022

Towards Understanding the Robustness Against Evasion Attack on Categorical Data

ICLR 2022poster

Characterizing and assessing the adversarial vulnerability of classification models with categorical input has been a practically important, while rarely explored research problem. Our work echoes the challenge by first unveiling the impact factors of adversarial vulnerability of classification mode…

Cited by 10SourcePDFScholar