Dynamics of Adversarial Attacks on Large Language Model-Based Search Engines

• URL: http://arxiv.org/abs/2501.00745v1
• Date: Wed, 01 Jan 2025 06:23:26 GMT
• Title: Dynamics of Adversarial Attacks on Large Language Model-Based Search Engines
• Authors: Xiyang Hu,
• Abstract summary: We study the dynamics of ranking manipulation attacks in search engines. We identify tipping points in the system dynamics, demonstrating that cooperation is more likely to be sustained when players are forward-looking. Our work provides a theoretical foundation and practical insights for understanding and mitigating their vulnerabilities.
• Score: 7.260315265550391
• License:
• Abstract: The increasing integration of Large Language Model (LLM) based search engines has transformed the landscape of information retrieval. However, these systems are vulnerable to adversarial attacks, especially ranking manipulation attacks, where attackers craft webpage content to manipulate the LLM's ranking and promote specific content, gaining an unfair advantage over competitors. In this paper, we study the dynamics of ranking manipulation attacks. We frame this problem as an Infinitely Repeated Prisoners' Dilemma, where multiple players strategically decide whether to cooperate or attack. We analyze the conditions under which cooperation can be sustained, identifying key factors such as attack costs, discount rates, attack success rates, and trigger strategies that influence player behavior. We identify tipping points in the system dynamics, demonstrating that cooperation is more likely to be sustained when players are forward-looking. However, from a defense perspective, we find that simply reducing attack success probabilities can, paradoxically, incentivize attacks under certain conditions. Furthermore, defensive measures to cap the upper bound of attack success rates may prove futile in some scenarios. These insights highlight the complexity of securing LLM-based systems. Our work provides a theoretical foundation and practical insights for understanding and mitigating their vulnerabilities, while emphasizing the importance of adaptive security strategies and thoughtful ecosystem design.

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