On the eve of the International Day for the Protection of Information, Oleksandr Mandzhai, Head of the Department of Information Processing Technology and Cyber Security of the Faculty № 4 of Kharkiv National University of Internal Affairs and Vitalii Nosov, Professor of the same Department held a binary lesson on “Applied Cryptology” with the participation of Deputy Head of Department of Criminal Analysis of National Police of Ukraine Denys Tsvietkov (http://univd.edu.ua/uk/news/11553).