Panama Papers: inside the Guardian's investigation into offshore secrets; Guardian, 4/16/16

Juliette Garside, Guardian; Panama Papers: inside the Guardian's investigation into offshore secrets:

"The security guard handed over a key with a small yellow label. The Guardian’s secure room had housed the team that in 2013 worked through data leaked by Edward Snowden to expose unchecked surveillance by British and American spy agencies.

Now it was to be home to a small group of journalists gathered from all corners of the newsroom to work on a project code-named Prometheus. Our investigation into the murky world of tax havens, underpinned by the biggest leak in history, would eventually surface eight months later with the publication of the Panama Papers."