The scheduled lecture of Cyber Security was conducted by the President of Scientific Cyber Security Association, Maksim Iavich in Kaunas. The lecture was attended by the students of Department of Information Technology at the Kaunas faculty of Vilnius University. The topic of the lecture was a cyber attacks simulator developed by Scientific Cyber Security Association. International students were greatly interested to discuss the variations and examples of attacks by Iavich. During the lecture, the massive attacks of the global scale were also discussed. The analysis of them and of their successful implementation reasons was done.