Yang-Sae Moon received B.S. (1991), M.S. (1993), and Ph.D. (2001) degrees in computer science from the Korea Advanced Institute of Science and Technology (KAIST). From 1993 to 1997, he was a research engineer at Hyundai Syscomm, Inc., where he participated in developing 2G and 3G mobile communication systems. From 2002 to 2005, he was a technical director at Infravalley, Inc., where he participated in planning, designing, and developing CDMA and W-CDMA mobile network services and systems. He is currently a professor at Kangwon National University. He was a visiting scholar at Purdue University in 2008–2009.