1. W. Machii, I. Kato, M. Koike, M. Matta, T. Aoyama, H. Naruoka, I. Koshijima and Y. Hashimoto, “Dynamic zoning based on situational activitie for ICS security” 10th Asian Control Conference (ASCC), May 2015, pp.1242-1246
2. Development of a monitoring system for encrypted data by OPC UA;Honda,2021
3. An Evaluation of the Applicability of OPC UA Publish Subscribe on Factory Automation use Cases;Eckhardt,2018
4. IAEA, “IAEA Nuclear Security Series No. 17,” 2011
5. A study of cyber security policy in industrial control system using data diodes;Jeon,2016