1. School of Cybersecurity, Korea University, Seoul, South Korea
2. Graduate School of Information Security, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
3. Electronics and Information System Engineering Major, Kookmin University, Seoul, South Korea
4. Department of Information System, Hanyang University, Seoul, South Korea
5. Department of Electrical and Computer Engineering, University of Cyprus, Nicosia, Cyprus
6. Cyber Security Research Division, ETRI, Daejeon, South Korea