The truth is that Bitcoin is a trackable cryptocurrency and its blockchain can be analyzed, however, what some scammers do in which little by little they are finding ways to filter accounts and disperse the illicit and thus even somehow lose traces, but Computer experts are able to detect all these movements, I think you will always be exposed to hackers, it is best to take good care of private passwords and not manage large funds in the Exchanges, because they are the most vulnerable.