1. Olin Business School, Washington University in St.Louis, St. Louis, Missouri 63130, USA
2. Jiangsu Jari Information Technology Co., Ltd., Lanyungang, Jangsu 222000, China
3. China Minsheng Banking Corp., Ltd., Beijing 100031, China
4. School of Cyberspace Security, Beijing University of Posts and Telecommunications, Beijing 100876, China