FedPEFT Evasion Attack
A vulnerability exists in Federated Parameter-Efficient Fine-Tuning (FedPEFT) systems for large language models (LLMs). Malicious clients can exploit the PEFT mechanism (e.g., LoRA, (IA)³, LayerNorm) to inject adversarial training data, compromising the model's safety alignment even with a small percentage of trainable parameters and a minority of malicious participants. The attack, termed "PEFT-as-an-Attack" (PaaA), circumvents the LLM's safety guardrails, causing it to generate harmful…
Evaluated models: Llama 2 7B Chat, Llama 3.2 3B Instruct, Phi-3.5 Mini Instruct+1 more
- Llama 2 7B Chat
- Llama 3.2 3B Instruct
- Phi-3.5 Mini Instruct
- Qwen 2.5 7B Instruct