Papers by Luxin Xu
X-Boundary: Establishing Exact Safety Boundary to Shield LLMs from Jailbreak Attacks without Compromising Usability (2025.findings-emnlp)
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| Challenge: | Existing methods for enhancing LLM security compromise usability, study finds . boundary-safe representations close to harmful representations are disrupted, resulting in usability decline . |
| Approach: | They propose a method to push harmful representations away from boundary-safe representations and obtain an exact distinction boundary. |
| Outcome: | The proposed method reduces over-refusal rate and maintains general capability . it pushes harmful representations away from boundary-safe representations, thereby reducing usability. |