Sergiy Gnatyuk Solomiia Fedushko Zhengbing Hu Roman Odarchenko Yuriy Syerov Andriy Peleshchyshyn Igor Korobiichuk (Eds.) International Workshop on Cyber Hygiene CybHyg 2019 Kyiv, Ukraine November 30, 2019 Gnatyuk S., Fedushko S., Hu Zh., Odarchenko R., Syerov Yu., Peleshchyshyn A., Korobiichuk I. (Eds.): International Workshop on Cyber Hygiene (CybHyg-2019), Kyiv, Ukraine, November 30, 2019, CEUR-WS.org, online. This volume represents the Proceedings of the International Workshop on Cyber Hygiene (CybHyg- 2019) co-located with 1st International Conference on Cyber Hygiene and Conflict Management in Global Information Networks (CyberConf 2019) held in Kyiv, Ukraine, November 30, 2019. Copyright © 2020 for the individual papers by the papers’ authors. Copying permitted only for private and academic purposes. This volume is published and copyrighted by its editors. Preface It is our pleasure to present you the proceedings of International Workshop on Cyber Hygiene (CybHyg- 2019), Kyiv, Ukraine, November 30, 2019. CyberHygiene-2019 is intended to attract researchers with a strong background in the field of on security and privacy of critical applications, ICT infrastructures and systems, management of cyber incidents, warfare and conflicts, and social engineering and identity theft protection techniques. The main workshop sections:  Security and Privacy of Critical Applications  ICT Infrastructures and Systems  Management of Cyber Incidents, Warfare and Conflicts  Social Engineering and Identity Theft Protection Techniques The CybHyg-2019 joined scientists from Ukraine, Poland, China, Georgia, Germany, Armenia, Kazakhstan, Belarus, North Macedonia, Hashemite Kingdom of Jordan, Pakistan, Kingdom of Saudi Arabia, Yemen, Nigeria, India, Portugal, Republic of Iraq, South Africa together with practical doctors. The language of CybHyg-2019 workshop is English. The workshop took the form of oral presentations of peer-reviewed regular papers. The workshop would not have been possible without the support of many people. First of all, we would like to thank the program and organization staff, the members of the Technical Program Committees and external reviewers for their excellent and tireless work. We sincerely wish that all attendees benefited scientifically from the workshop and wish them every success in their research. It is the humble wish of the workshop organizers that the professional dialogue among the researchers, scientists, engineers and doctors continues beyond the event and that the friendships and collaborations forged will linger and prosper for many years to come. 2019 Sergiy Gnatyuk Solomiia Fedushko Zhengbing Hu Roman Odarchenko Yuriy Syerov Andriy Peleshchyshyn Igor Korobiichuk