Adversarial Attacks against Closed-Source MLLMs via Feature Optimal Alignment - Jia, Xiaojun; Gao, Sensen; Qin, Simeng; Pang, Tianyu; Du, Chao; Huang, Yihao; Li, Xinfeng; Li, Yiming; Li, Bo; Liu, Yang (Advances in Neural Information Processing Systems, 2025)