Traditionally, experts considered several types of blockades, including sea, land, with the development of aircraft construction - air, with the advent of space technology and special satellites - space. With the rapid development of computer technology and communication tools, the information blockades have been introduced. Each type of blockade had its own historical characteristics; they differed in costs and, of course, efficiency. In the second half and at the end of the 20th century, scientists operated the term cyber blockade and restrictions in the field of cyberspace. A number of definitions of cyberspace are provided, since this category changes and is refined depending on the rapidly developing technical, technological, economic and social aspects of our life. Because of the threat they pose, cyber-attacks and cyber warfare receive significant attention once society and business is developing. The growing dependence of countries on the cyberspace can play a negative role in the process of confrontation; the enemy can attack those areas where cyberspace is a decisive element.