Oleh Harasymchuk graduated from the Lviv Polytechnic National University, Ukraine in 2001, with a degree in control and automation systems. In 2007 he presented his Ph.D. dissertation on the specialty 05.13.05 “elements and devices of computers and control systems” at the Lviv Polytechnic National University. Since 2005, he has been working as an assistant and his current position is associate professor at the Department of Information Security at Lviv Polytechnic National University. He is the author of more than 80 scientific publications, including articles, monographs, textbooks, patents, and conference proceedings. His research interests include cybersecurity, computer technology, pseudorandom number generators, and pulse sequence generators with Poisson distribution law.