@article{safetyanchordefendingharmfulfinetuningvi, title = {Safety Anchor: Defending Harmful Fine-tuning via Geometric Bottlenecks}, author = {Guoxin Lu and Letian Sha and Qing Wang and Peijie Sun and Hao Zhou and Hua Dai and Fu Xiao}, year = {2026}, eprint = {2605.05995}, archivePrefix = {arXiv}, url = {https://arxiv.org/abs/2605.05995}, }