Revisiting Jailbreaking for Large Language Models: A Representation Engineering Perspective

• URL: http://arxiv.org/abs/2401.06824v5
• Date: Fri, 21 Feb 2025 05:17:52 GMT
• Title: Revisiting Jailbreaking for Large Language Models: A Representation Engineering Perspective
• Authors: Tianlong Li, Zhenghua Wang, Wenhao Liu, Muling Wu, Shihan Dou, Changze Lv, Xiaohua Wang, Xiaoqing Zheng, Xuanjing Huang,
• Abstract summary: Recent surge in jailbreaking attacks has revealed significant vulnerabilities in Large Language Models (LLMs) when exposed to malicious inputs.<n>We suggest that the self-safeguarding capability of LLMs is linked to specific activity patterns within their representation space.<n>Our findings demonstrate that these patterns can be detected with just a few pairs of contrastive queries.
• Score: 43.94115802328438
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The recent surge in jailbreaking attacks has revealed significant vulnerabilities in Large Language Models (LLMs) when exposed to malicious inputs. While various defense strategies have been proposed to mitigate these threats, there has been limited research into the underlying mechanisms that make LLMs vulnerable to such attacks. In this study, we suggest that the self-safeguarding capability of LLMs is linked to specific activity patterns within their representation space. Although these patterns have little impact on the semantic content of the generated text, they play a crucial role in shaping LLM behavior under jailbreaking attacks. Our findings demonstrate that these patterns can be detected with just a few pairs of contrastive queries. Extensive experimentation shows that the robustness of LLMs against jailbreaking can be manipulated by weakening or strengthening these patterns. Further visual analysis provides additional evidence for our conclusions, providing new insights into the jailbreaking phenomenon. These findings highlight the importance of addressing the potential misuse of open-source LLMs within the community.

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