The recent FinCEN scandal – which saw the leak of confidential bank reports – allowed us a peek behind the curtain at the vast amounts of dubious funds that pass through our financial system. As well as moving money for fraudsters and drug dealers, the leaked files show how shady officials from corruption hotspots transfer millions from their countries through some of the world’s biggest banks. These countries are often referred to as “kleptocracies” – where the ruling elite abuse their power to make incredible fortunes from the country’s natural resources.