Sergey Klevogin is a OSCP, CEH (Master), LPT (Master), ECSA, CCISO, CHFI, CND, CCSE, ECES, CEI, MCSA, MCSE, MCITP, MCT, Top10 HackTheBox at SPECIALIST.RU. He possess expertise in computer security, information security, security, penetration testing, virtualization and 5 more skills. He is proficient in English. Colleagues describe him as "Sergey is the first Certified Ethical Hacker in Russia. He didn't stop in that position and continued learning. Now he has more than 40 international certificates including EC-Council, Microsoft, etc. So if really want to find the best specialist in IT-industry you should choose only Sergey." and "Лучший преподаватель "Специалиста". Эксперт в области компьютерных сетей и защиты информации. Ортодоксальный IT-инженер. Мастер компьютерной обороны и нападения. Тренировочный IQ — 145, соревновательный — 160!"