Heeyoul Kim, Vol. 13, No. 3, March 30, 2019
10.3837/tiis.2019.03.031

• In-app Billing
• Automated attack
• probabilistic test
• Android
• Security

Heeyoul Kim, Ki-Woong Park, Daeseon Choi, Younho Lee, Vol. 12, No. 6, June 29, 2018
10.3837/tiis.2018.06.027

• Resident Registration Number
• Web service attacks
• Personal information security
• information security

Woosik Lee, Heeyoul Kim, Min Hong, Min-Goo Kang, Seung Ryul Jeong, Namgi Kim, Vol. 12, No. 4, April 29, 2018
10.3837/tiis.2018.04.025

• Sensor network
• wireless body sensor network
• transmission power control

Heeyoul Kim, Vol. 5, No. 9, September 28, 2011
10.3837/tiis.2011.09.010

• Secure group communication
• group key rekeying
• ad hoc network