Darknet means portions of the Internet that are not found by popular search engines. The users remain anonymous, hence the darknet is often a magnet for criminals.
To gain access to the darknet a so-called “Tor Browser” is needed. Because of the high degree of anonymity, the darknet is known as a transit point for drugs, weapons or child pornography. Alternatively the term "deep web" is used.
European illicit drug use is one thing that doesn't change fast. Cannabis is still the drug of choice and the number of new psychoactive substances grows each year. But one drug is making a comeback.