He received his PhD in industrial and systems engineering from Korea Advanced Institute of Science and Technology (KAIST) in 2009. He received an MS degree from KAIST in 2000. He received a BS degree in industrial management from KAIST in 1998. 
He founded A3 Security Consulting, the first information security consulting company in South Korea in1999. He was a member and last leader of KUS (KAIST UNIX Society), the legendary hacking group in South Korea. 
Currently he is an associate professor in Graduate School of Information Security, Korea University. His recent research is focused on solving many security problems in online games based on the user behavior analysis. Before joining Korea University, he was a technical director (TD) and a head of information security department of NCSOFT (2004~2010), one of the most famous MMORPG companies in the world.


  • 1992.3~1994.2 대전과학고등학교  
  • 1994.3~1998.2 KAIST 산업경영학과 학사 
  • 1998.3~2000.2 KAIST 산업공학과 석사 
  • 2000.3~2009.2 KAIST 산업및시스템공학과 박사 

Work Experiences

  • 2015.3~ 현재        고려대학교 정보보호대학원, 사이버국방학과 부교수 
  • 2010.3~ 2015.2   고려대학교 정보보호대학원, 사이버국방학과 조교수
  • 2004.5~ 2010.2   엔씨소프트, 정보보안실 실장/Technical Director
  • 1999.8                에이쓰리시큐리티컨설팅 (현 에이쓰리시큐리티) 창업자 


  • 2003.12.31 정보통신 분야 유공자 표창 수여
  • 2004.12.21 "NC Rookie 상", 2004년 NC모범사원시상
  • 2007.01.02 "NC 대상", 2006년 엔씨종합시상-엔씨대상
  • 2012.12.10 "국내논문상", 2012년 한국정보보호학회 학술상 
  • 2014 "최우수논문상", 국방정보보호컨퍼런스 2014
  • 2015 "최우수논문상", 국방정보보호컨퍼런스 2015
  • 2015.5 "Best paper award (runner-up)", SIMPLEX 2015 (www.simplexconf.net)