Explainable and Fine-Grained Safeguarding of LLM Multi-Agent Systems via Bi-Level Graph Anomaly Detection

JunJun Pan, Yixin Liu 0001, Rui Miao 0003, Kaize Ding, Yu Zheng 0013, Quoc Viet Hung Nguyen, Alan Wee-Chung Liew, Shirui Pan. Explainable and Fine-Grained Safeguarding of LLM Multi-Agent Systems via Bi-Level Graph Anomaly Detection. In Maria Liakata, Viviane P. Moreira, Jiajun Zhang 0001, David Jurgens, editors, Proceedings of the 64th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), ACL 2026, San Diego, California, United States, July 2-7, 2026. pages 30491-30506, Association for Computational Linguistics, 2026. [doi]

Abstract

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