arXiv AI By Haoran Bu, Yiting Shen, Litian Zhang, Ruihan Hu, Xi Zhang

Is it my preference? Role Grounding Attack against Agent's Memory via Social Interaction

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The paper introduces the Role Grounding Attack (RGA), a method that exploits a vulnerability in LLM-based agents’ memory systems where preferences can be misattributed from an attacker to the victim’s user. By publishing nested conversation posts that quote attacker-user interactions, the attacker causes the victim agent to record the attacker’s preferences as its own, leading to misinformed decisions. The study demonstrates RGA’s effectiveness in tool‑selection manipulation and privacy leakage across multiple memory systems and language models, highlighting the need for stronger role grounding mechanisms.

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