@article{exposingthesystematicvulnerabilityofopen, title = {Exposing the Systematic Vulnerability of Open-Weight Models to Prefill Attacks}, author = {Lukas Struppek and Adam Gleave and Kellin Pelrine}, year = {2026}, eprint = {2602.14689}, archivePrefix = {arXiv}, url = {https://arxiv.org/abs/2602.14689}, }