Transactions in popular cryptocurrencies are not monitored in any way, so purchases and sales are completely anonymous and it is almost impossible to trace their owners in any way. This is one of the main reasons why Cambridge Analytica sought its own cryptocurrency. The company came to public attention mainly due to the misuse of user data on Facebooku.
Cnet pointed out that this would make it easier for individual businesses to buy data from various cybercriminals. They would not be afraid of any disclosure thanks to anonymous transactions.