collaborators

5 papers

cs.LG2026

MM-PoisonRAG: Disrupting Multimodal RAG with Local and Global Poisoning Attacks

Hyeonjeong Ha, Qiusi Zhan, Jeonghwan Kim +6

Retrieval-augmented generation (RAG) has become a common practice in multimodal large language models (MLLM) to enhance factual grounding and reduce hallucination. Yet, its relianc…

cs.CL2026

SafeSearch: Do Not Trade Safety for Utility in LLM Search Agents

Qiusi Zhan, Angeline Budiman-Chan, Abdelrahman Zayed +3

Large language model (LLM) based search agents iteratively generate queries, retrieve external information, and reason to answer open-domain questions. While researchers have prima…

cs.AI2026

BEAT: Visual Backdoor Attacks on VLM-based Embodied Agents via Contrastive Trigger Learning

Qiusi Zhan, Hyeonjeong Ha, Rui Yang +7

Recent advances in Vision-Language Models (VLMs) have propelled embodied agents by enabling direct perception, reasoning, and planning task-oriented actions from visual inputs. How…

cs.MA2025

Teams of LLM Agents can Exploit Zero-Day Vulnerabilities

Yuxuan Zhu, Antony Kellermann, Akul Gupta +4

LLM agents have become increasingly sophisticated, especially in the realm of cybersecurity. Researchers have shown that LLM agents can exploit real-world vulnerabilities when give…

cs.CR2025

Adaptive Attacks Break Defenses Against Indirect Prompt Injection Attacks on LLM Agents

Qiusi Zhan, Richard Fang, Henil Shalin Panchal +1

Large Language Model (LLM) agents exhibit remarkable performance across diverse applications by using external tools to interact with environments. However, integrating external to…