Guangyu (Noah) Shen

Selected publications All publications ↗

* Equal contribution

• LensCT: Fine-Grained AI-Involved Text Detection via Temporal-Hierarchical Tomograms of LLM Internals
  Hanxi Guo, Siyuan Cheng, Kaiyuan Zhang, Guangyu Shen, Xiangyu Zhang
  Conference on Neural Information Processing Systems (NeurIPS 2026)
  

• Natural-Language Workflows Are Not Software Yet: Artifact-Driven Compilation for Reliable Agent Execution
  Xiangzhe Xu^*, Hanxi Guo^*, Guangyu Shen, Siyuan Cheng, Xiangyu Zhang
  Preprint
  

• When Harmful Intent Dissolves into Technical Detail: How Safe Are Coding Agents Against Cyber Misuse?
  Xiangzhe Xu, Shiwei Feng, Guangyu Shen, Xiangyu Zhang
  ACM Conference on AI and Agentic Systems (CAIS 2026)
  adapted by OpenHands

• From Poisoned to Aware: Fostering Backdoor Self-Awareness in LLMs
  Guangyu Shen, Siyuan Cheng, Xiangzhe Xu, Yuan Zhou, Hanxi Guo, Zhuo Zhang, Xiangyu Zhang
  Proceedings of the 43rd International Conference on Machine Learning (ICML 2026)
  Spotlight Paper (Top 2.2%)
  

• AuthGuard: Generalizable Deepfake Detection via Language Guidance
  Guangyu Shen, Zhihua Li, Xiang Xu, Tianchen Zhao, Zheng Zhang, Dongsheng An, Zhuowen Tu, Yifan Xing, Qin Zhang
  Winter Conference on Applications of Computer Vision 2026 (WACV 2026)
  

• ASTRA: Autonomous Spatial-Temporal Red-teaming for AI Software Assistants
  Xiangzhe Xu^*, Guangyu Shen^*, Zian Su, Siyuan Cheng, Hanxi Guo, Lu Yan, Xuan Chen, Jiasheng Jiang, Xiaolong Jin, Chengpeng Wang, Zhuo Zhang, Xiangyu Zhang
  NeurIPS 2025 Workshop on Socially Responsible and Trustworthy Foundation Models (ResponsibleFM 2025)
  🏆 Winning red-teaming solution in Amazon Nova AI Challenge
  

• Rapid Optimization for Jailbreaking LLMs via Subconscious Exploitation and Echopraxia
  Guangyu Shen^*, Siyuan Cheng^*, Kaiyuan Zhang, Lu Yan, Shengwei An, Zhuo Zhang, Guanhong Tao, Shiqing Ma, Xiangyu Zhang
  NeurIPS 2025 Workshop on Socially Responsible and Trustworthy Foundation Models (ResponsibleFM 2025)
  

• BAIT: Large Language Model Backdoor Scanning by Inverting Attack Target
  Guangyu Shen^*, Siyuan Cheng^*, Zhuo Zhang, Guanhong Tao, Kaiyuan Zhang, Hanxi Guo, Lu Yan, Xiaolong Jin, Shengwei An, Shiqing Ma, Xiangyu Zhang
  Proceedings of the 46th IEEE Symposium on Security and Privacy (S&P 2025)
  

• ODSCAN: Backdoor Scanning for Object Detection Models
  Siyuan Cheng^*, Guangyu Shen^*, Guanhong Tao, Kaiyuan Zhang, Zhuo Zhang, Shengwei An, Xiangzhe Xu, Yingqi Liu, Shiqing Ma, Xiangyu Zhang
  Proceedings of the 45th IEEE Symposiums on Security and Privacy (S&P 2024)
  

• UNIT: Backdoor Mitigation via Automated Neural Distribution Tightening
  Siyuan Cheng^*, Guangyu Shen^*, Kaiyuan Zhang, Guanhong Tao, Shengwei An, Hanxi Guo, Shiqing Ma, Xiangyu Zhang
  The 18th European Conference on Computer Vision (ECCV 2024)
  

• Django: Detecting Trojans in Object Detection Models via Gaussian Focus Calibration
  Guangyu Shen^*, Siyuan Cheng^*, Guanhong Tao, Kaiyuan Zhang, Yingqi Liu, Shengwei An, Shiqing Ma, Xiangyu Zhang
  Proceedings of 37th Conference on Neural Information Processing Systems (NeurIPS 2023)
  

• PICCOLO: Exposing Complex Backdoors in NLP Transformer Models
  Yingqi Liu^*, Guangyu Shen^*, Guanhong Tao, Shengwei An, Shiqing Ma, Xiangyu Zhang
  Proceedings of the 43rd IEEE Symposiums on Security and Privacy (S&P 2022)
  

• Constrained Optimization with Dynamic Bound-scaling for Effective NLP Backdoor Defense
  Guangyu Shen^*, Yingqi Liu^*, Guanhong Tao, Qiuling Xu, Zhuo Zhang, Shengwei An, Shiqing Ma, Xiangyu Zhang
  Proceedings of the 39th International Conference on Machine Learning (ICML 2022)
  

• Complex Backdoor Detection by Symmetric Feature Differencing
  Yingqi Liu^*, Guangyu Shen^*, Guanhong Tao, Zhenting Wang, Shiqing Ma, Xiangyu Zhang
  IEEE/CVF Conference on Computer Vision and Pattern Recognition 2022 (CVPR 2022)
  

• Backdoor Scanning for Deep Neural Networks through K-Arm Optimization
  Guangyu Shen^*, Yingqi Liu^*, Guanhong Tao, Shengwei An, Qiuling Xu, Siyuan Cheng, Shiqing Ma, Xiangyu Zhang
  Proceedings of Thirty-eighth International Conference on Machine Learning (ICML 2021)