2025
Forget the Unneeded: Backdooring Large Language Models via Contrastive-enhanced Machine Unlearning
EMNLP 2025
Prompt tuning for Large Language Models (LLMs) is vulnerable to backdoor attacks. Existing methods find backdoor attacks to be a significant threat in data-rich scenarios. However, in data-limited scenarios, these methods have difficulty capturing precise backdoor patterns, leading to weakened backd