[Australian police crack down on "ghost" communication apps and confiscate $6.4 million worth of cryptocurrencies] Golden Finance reported that the Australian Federal Police (AFP) seized $6.4 million worth of cryptocurrencies in a global crackdown on secret messaging apps. The operation was code-named "Operation Kraken." The cryptocurrency exchange Kraken said the name had nothing to do with its entity, while AFP said Kraken was not under investigation.