The Day of the Department of Information Security and Data Transmission was held in the reading room of the researchers of the ONAT named after O.S. Popov from February 15 to March 03, 2016, where the teachers got acquainted with the EC and electronic file of articles of the library, with the “Abstracts of scientific works of the employees of the ONAT named after O.S. Popov” on the library’s website, available professional educational literature, professional periodicals, articles from journals, and the book supply card index of the disciplines of the Department of Information Security and Data Transmission. The department’s book supply problems were also discussed, and orders were made to purchase the necessary literature and periodicals.