The purpose of the research is to identify the most successful ideas and legal techniques used in international law regarding regulations of defense against criminal offences in the sphere of cybersecurity, as well as blockchain functioning and cryptocurrency turnover. Results. On the basis of the positive international experience in regulating the criminal legal protection of relations in the last-mentioned sphere, the following directions for improving Russian criminal legislation were formulated: 1) fixation of the fair limits of the criminal administrative liability for defendant in reliance on the level of public danger of his personality and his offences; 2) creation of the formally defined crimes against computer information; 3) criminalization of some actions that precede cybercrimes; 4) expansion in the number of the mentioning of the sign "by interfering in the functioning of the resources of the storing, processing or transmitting computer information or data telecommunications network" as an essential or aggravating elements of crimes, typically committed with the use of information technologies (for example, in the articles number 133, 134, 135, 137, 138, 139, 146, 147, 163, 165, 240, 240.1, 241 of the Criminal Code of the Russian Federation, etc.); 5) expansion in the number of the elements of crimes combined in the chapter 28 of the Criminal Code of the Russian Federation, in reliance on the modern criminal schemes and typical criminal situations in the world of information technology; 6) expansion of the effect of the article number 274.1 of the Criminal Code of the Russian Federation on any criminal offense to the critical information infrastructure of the Russian Federation and inclusion of the additional aggravating elements in the text of this article.