Papers with proxy LLM
Proxy Barrier: A Hidden Repeater Layer Defense Against System Prompt Leakage and Jailbreaking (2025.findings-emnlp)
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Pedro Schindler Freire Brasil Ribeiro, Iago Alves Brito, Rafael Teixeira Sousa, Fernanda Bufon Färber, Julia Soares Dollis, Arlindo Rodrigues Galvão Filho
| Challenge: | Prompt injection and jailbreak attacks remain a critical vulnerability for large language models . a lightweight defense that interposes a proxy LLM between the user and the target model addresses this vulnerability . |
| Approach: | a lightweight proxy LLM is interposed between the user and the target model to prevent prompt injection and jailbreak attacks. |
| Outcome: | ProB outperforms baselines and achieves up to 98.8% defense effectiveness . it is deployable entirely at the API level and requires no access to model weights or prompts . |
Decoupled Proxy Alignment: Mitigating Language Prior Conflict for Multimodal Alignment in MLLMs (2025.findings-emnlp)
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Chenkun Tan, Pengyu Wang, Shaojun Zhou, Botian Jiang, Zhaowei Li, Dong Zhang, Xinghao Wang, Yaqian Zhou, Xipeng Qiu
| Challenge: | Recent advances in multimodal large language models focus on improving performance . however, language prior conflict leads to suboptimal vision-language alignment . |
| Approach: | They propose a method to decouple the alignment process from language prior interference . they use a proxy LLM to detach from language interference during pretraining . |
| Outcome: | The proposed method improves training performance and generalizes training data. |