DualSentinel: A Lightweight Framework for Detecting Targeted Attacks in Black-box LLM via Dual Entropy Lull Pattern

Xiaoyi Pang, Hong Kong University of Science and Technology; Xuanyi Hao, Zhejiang University; Pengyu Liu, Hong Kong University of Science and Technology; Qi Luo, Shandong University; Song Guo, Hong Kong University of Science and Technology; Zhibo Wang, Zhejiang University