What I’ve Learned: Lessons and Advice from a Veteran of the Panama Papers Investigation

Several years ago a whistleblower reached out to the German newspaper Süddeutsche Zeitung with an enticing message: “Hello, this is John Doe… Interested in data?” That story would become the Panama Papers, the first in a number of international collaborations for investigative reporter Frederik Obermaier. Read his tips and advice about investigative reporting.