Cryptocurrencies are now experiencing not the best of times. The fall of the exchange rate and interest in digital currencies, the lack of a regulator, laws, the presence of prohibitions and other nuances, all this significantly complicates the spread of cryptocurrency. In many countries, this type of currency is not legal and can even be punished. However, the bans on the spread of cryptocurrencies are not accidental. The fact is that a lot of cases of fraud are associated with cryptocurrencies.