A whistleblower leak to German newspaper Süddeutsche Zeitung and other media led to reporting on Sunday revealing that Credit Suisse—one of the world’s biggest private banks—knowingly accepted “corrupt autocrats, suspected war criminals and human traffickers, drug dealers and other criminals” as customers. Data on more than 18,000 bank accounts, holding more than $100 billion was leaked. The accounts Corporateincluded personal, shared and corporate accounts with opened as far back as the 1940s. Nearly 50 media outlets have spent months investigating the data. The German daily said it received the leaked data anonymously through a secure digital mailbox over a year ago. The newspaper says it didn’t make any payment or promises for the leak.