@article{invisiblepromptsvisiblethreatsmalicious, title = {Invisible Prompts, Visible Threats: Malicious Font Injection in External Resources for Large Language Models}, author = {Junjie Xiong and Changjia Zhu and Shuhang Lin and Chong Zhang and Yongfeng Zhang and Yao Liu and Lingyao Li}, year = {2025}, eprint = {2505.16957}, archivePrefix = {arXiv}, url = {https://arxiv.org/abs/2505.16957v1}, }