This should be a weak opinion for today's digital age. Behind the scenes criminals also have high IT knowledge which makes them untraceable for years even they have a high educational background before being recruited as members. If you think their technological knowledge is very limited then I think it will end in a weak opinion. Illegal trade is carried out online and has been done regularly for a long time so that their activities in the black market are more likely to be successful because they are equipped with good knowledge. It is possible that bitcoin and other privacy altcoin are also used as a means of payment.