The regulators looking for people Who use crypto to wash money coming from corruption in Petrobras and big engineer company.
Many ponzi are busted too.
The govern combat the ponzi is a good news, but this happen only to protect banks, because people cashout your money from banks to invest in these ponzi. Banks in Brazil are a BIG mafia, they control everything. In vaza jato scandal, the banks are envolved too, but no one get punishiment from law.
They raise high interest rates and leave the population indebted and in their hands, indebted the state itself with such loans as well.