Keyan Guo

19 papers A* 6B 1C 3Journal 8Unranked 1
YearRankTypeTitle / Venue / Authors
2026 J jnl
AgentSentry: Mitigating Indirect Prompt Injection in LLM Agents via Temporal Causal Diagnostics and Context Purification.
CoRR
Tian Zhang, Yiwei Xu, Juan Wang, Keyan Guo, Xiaoyang Xu, Bowen Xiao, Quanlong Guan, Jinlin Fan, Jiawei Liu, Zhiquan Liu, Hongxin Hu
2026 A* conf
Beyond Age-Based Restrictions: Rethinking Children's Online Safety Through Comparing Parent-Child Perspectives of Risks in User-Generated Content Games.
CHI
Ruchi Panchanadikar, Yang Hu, Keyan Guo, Amelia L. Hall, Hongxin Hu, Nishant Vishwamitra, Guo Freeman
2025 J jnl
Fortifying LLM-Based Code Generation with Graph-Based Reasoning on Secure Coding Practices.
CoRR
Rupam Patir, Keyan Guo, Haipeng Cai, Hongxin Hu
2025 A* conf
HVGuard: Utilizing Multimodal Large Language Models for Hateful Video Detection.
EMNLP
Yiheng Jing, Mingming Zhang, Yong Zhuang, Jiacheng Guo, Juan Wang, Xiaoyang Xu, Wenzhe Yi, Keyan Guo, Hongxin Hu
2025 A* conf
I know what you MEME! Understanding and Detecting Harmful Memes with Multimodal Large Language Models.
NDSS
Yong Zhuang, Keyan Guo, Juan Wang, Yiheng Jing, Xiaoyang Xu, Wenzhe Yi, Mengda Yang, Bo Zhao, Hongxin Hu
2025 A* conf
JBShield: Defending Large Language Models from Jailbreak Attacks through Activated Concept Analysis and Manipulation.
USENIX Security Symposium
Shenyi Zhang, Yuchen Zhai, Keyan Guo, Hongxin Hu, Shengnan Guo, Zheng Fang, Lingchen Zhao, Chao Shen, Cong Wang, Qian Wang
2025 J jnl
JBShield: Defending Large Language Models from Jailbreak Attacks through Activated Concept Analysis and Manipulation.
CoRR
Shenyi Zhang, Yuchen Zhai, Keyan Guo, Hongxin Hu, Shengnan Guo, Zheng Fang, Lingchen Zhao, Chao Shen, Cong Wang, Qian Wang
2025 C conf
Toward Unified Moderation of Cyberbullying Across Social Media and Video Games.
ICMLA
David Cong, Keyan Guo, Hongxin Hu
2024 J jnl
AI-Cybersecurity Education Through Designing AI-based Cyberharassment Detection Lab.
CoRR
Ebuka Okpala, Nishant Vishwamitra, Keyan Guo, Song Liao, Long Cheng, Hongxin Hu, Yongkai Wu, Xiaohong Yuan, Jeannette Wade, Sajad Khorsandroo
2024 J jnl
An Investigation of Large Language Models for Real-World Hate Speech Detection.
CoRR
Keyan Guo, Alexander Hu, Jaden Mu, Ziheng Shi, Ziming Zhao, Nishant Vishwamitra, Hongxin Hu
2024 C conf
Detecting Cyberbullying in Visual Content: A Large Vision-Language Model Approach.
ICMLA
Jaden Mu, David Cong, Helen Qin, Ishan Ajay, Keyan Guo, Nishant Vishwamitra, Hongxin Hu
2024 J jnl
Moderating Embodied Cyber Threats Using Generative AI.
CoRR
Keyan Guo, Guo Freeman, Hongxin Hu
2024 A* conf
Moderating Illicit Online Image Promotion for Unsafe User Generated Content Games Using Large Vision-Language Models.
USENIX Security Symposium
Keyan Guo, Ayush Utkarsh, Wenbo Ding, Isabelle Ondracek, Ziming Zhao, Guo Freeman, Nishant Vishwamitra, Hongxin Hu
2024 J jnl
Moderating Illicit Online Image Promotion for Unsafe User-Generated Content Games Using Large Vision-Language Models.
CoRR
Keyan Guo, Ayush Utkarsh, Wenbo Ding, Isabelle Ondracek, Ziming Zhao, Guo Freeman, Nishant Vishwamitra, Hongxin Hu
2024 A* conf
Moderating New Waves of Online Hate with Chain-of-Thought Reasoning in Large Language Models.
SP
Nishant Vishwamitra, Keyan Guo, Farhan Tajwar Romit, Isabelle Ondracek, Long Cheng, Ziming Zhao, Hongxin Hu
2023 C conf
An Investigation of Large Language Models for Real-World Hate Speech Detection.
ICMLA
Keyan Guo, Alexander Hu, Jaden Mu, Ziheng Shi, Ziming Zhao, Nishant Vishwamitra, Hongxin Hu
2023 — conf
Exploring Vulnerabilities in Voice Command Skills for Connected Vehicles.
SmartSP
Wenbo Ding, Song Liao, Keyan Guo, Fuqiang Zhang, Long Cheng, Ziming Zhao, Hongxin Hu
2023 J jnl
Moderating New Waves of Online Hate with Chain-of-Thought Reasoning in Large Language Models.
CoRR
Nishant Vishwamitra, Keyan Guo, Farhan Tajwar Romit, Isabelle Ondracek, Long Cheng, Ziming Zhao, Hongxin Hu
2023 B conf
Understanding and Analyzing COVID-19-related Online Hate Propagation Through Hateful Memes Shared on Twitter.
ASONAM
Nishant Vishwamitra, Keyan Guo, Song Liao, Jaden Mu, Zheyuan Ma, Long Cheng, Ziming Zhao, Hongxin Hu