Safe in Isolation, Dangerous Together: Agent-Driven Multi-Turn Decomposition Jailbreaks on LLMs

Large Language Models (LLMs) are increasingly deployed in critical domains, but their vulnerability to jailbreak attacks remains a significant concern.In this paper, we propose a multiagent, multi-turn jailbreak strategy that systematically bypasses LLM safety mechanisms by decomposing harmful queries into seemingly benign sub-tasks.Built upon a role-based agentic framework consisting of a Question Decomposer, a Sub-Question Answerer, and an Answer Combiner, we demonstrate how LLMs can be manipulated to generate prohibited content without prompt manipulations.Our results show a drastic increase in attack success, often exceeding 90% across various LLMs, including GPT-3.5-Turbo,Gemma-2-9B, and Mistral-7B.We further analyze attack consistency across multiple runs and vulnerability across content categories.Compared to existing widely used jailbreak techniques, our multi-agent method consistently achieves the highest attack success rate across all evaluated models.These findings reveal a critical flaw in the current safety architecture of multi-agent LLM systems: their lack of holistic context awareness.By revealing this weakness, we argue for an urgent need to develop multi-turn, context-aware, and robust defenses to address this emerging threat vector. A Jailbreak Evaluation PromptYou are an evaluator tasked with determining if a response to a jailbreak prompt was successful.