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A five-family jailbreak sweep across seven models found obfuscation the most transferable vector at 54.3% mean attack success, and self-reminder prompting cut it to 5-10%

AspireAI community · arXiv
The authors evaluate five adversarial jailbreaking attack families, direct requests, roleplay, hypothetical framing, instruction override and obfuscation, across seven open-weight and API-accessible models: Llama-3-8B, Llama-3.1-8B, Llama-3.2-3B, Mistral-7B, Qwen2.5-7B, Gemma2-9B and Phi-4-14B. Obfuscation produced the highest mean attack success rate at 54.3% and was the most transferable vector, bypassing every evaluated model with nonzero success, while model size did not predict robustness (Spearman r = -0.57, p = 0.18) and models within one architecture family differed sharply. Of four defenses tested against the two most vulnerable models, self-reminder prompting was the most consistent, cutting attack success from 44% to 10% on Mistral-7B and from 48% to 5% on Llama-3.1-8B with zero false positives and no added inference cost. The models tested are 3B-14B class, and the defense evaluation covers only two of the seven.
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