AS LONG as dirty money has been around, so has money-laundering. Between $ 800bn and $ 2trn, or 2-5% of global GDP, is washed annually, estimates the United Nations Office on Drugs and Crime. Criminals have swapped money for precious metals, mis-stated invoices, rinsed cash through casinos or simply strapped it to their bodies and flown to places where banks don’t ask questions. Now they have a new detergent: crypto-currencies.
Such data as there are suggest that crypto-laundering is still a small share of the whole. But crypto-currencies’ attractions—global availability, the speed and irreversibility of transactions and the ability to hide identities—are plain. Rob Wainwright, head of Europol, Europe’s police agency, has estimated that 3-4% of the continent’s annual criminal takings, or £3bn-4bn ($ 4.2bn-5.6bn), are crypto-laundered. He thinks the problem will get worse. America’s Drug Enforcement Administration believes international gangs are using crypto-currencies more.
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