COUNTERACTION AGAINST THE TERRORIST AND EXTREMIST IDEOLOGY IN THE INTERNET Bilyk Vladimir Ivanovich, colonel of police, PhD in Law. <...> Place of employment: The Rostov Law Institute of MIA Russia. <...> Place of employment: Ministry of Internal Affairs of Russia for the city of Taganrog. <...> E-mail: pashok0603@gmail.com Annotation: The article deals with the actual theoretical and practical questions of terrorism ideology, national and religious extremism in the Internet. <...> Authors consider problems and make proposals on certain guidelines for the counteraction against this ideology. <...> В статье рассматриваются актуальные теоретические и практические вопросы идеологии терроризма, национального и религиозного экстремизма в сети Интернет и проблемные аспекты. <...>