Shielding QR Codes: Unveiling the Real-World Illicit Promotion Behind Adversarial QR Codes

Lijie Wu and Xiaoping Zhang, Tsinghua University; Mingxuan Liu, Zhongguancun Laboratory; Yue Qin, Central University of Finance and Economics; Baojun Liu, Tsinghua University; Geng Hong, Fudan University; Zhenrui Zhang and Chenghui Wu, Baidu Inc; Hui Jiang, Tsinghua University; Baidu Inc