Methodology

It’s certainly one of the single biggest leaks of documents in the history of investigative reporting. Over the last 15 months, 86 journalists in 46 countries have been poring over a cache of 2.5 million documents on offshore holdings obtained by the International Consortium of Investigative Journalists. ICIJ coordinated the investigation from DC, using a secure messaging system to communicate with a worldwide team of journalists and free-text retrieval software and programmers on three continents to mine the information from the documents.