Last year, according to a report by Chainalysis, which is a data firm based in New York, they stole an incredible $1.7 billion worth of cryptocurrency. In order to launder this money, hackers will distribute it across enormous numbers of wallets. They'll also use tools called mixers, where essentially lots of different actors all put their crypto into a combined pool. And then once they've got enough confidence that they've obscured the origins of these funds, they will try and convert this money into fiat currency into normal hard cash.