How the Panama Papers were found

Available for over a year

2.6 terabytes of data, 11.5 million documents, and 214,000 letterbox companies were sent to the German paper Sueddeutsche Zeitung in an email from an anonymous source. Bastian Obermayer, the reporter who was approached with the offer of the leaked documents, describes what happened on the day when he received them. (Photo: Mossack Fonseca law firm sign in Panama. Credit: Reuters)