PEV, which adds Gaussian noise to prompt embeddings, reaches a 100% jailbreak rate on JailbreakBench across six open-weight LLMs
The work introduces the Perturbed Embedding Vector (PEV) jailbreak: adding independent Gaussian noise to a prompt's embedding and resampling it repeatedly, with no gradient computation and no weight modification, achieves a 100% jailbreak rate on all 100 JailbreakBench prompts across six open-weight LLMs, with the first successful jailbreak typically arriving within one minute and at lower compute cost than the compared prior methods.