An anonymous reader quotes a report from The Guardian: The whistleblower behind the Panama Papers broke their silence on Friday to explain in detail how the injustices of offshore tax havens drove them to the biggest data leak in history. The source, whose identity and gender remain a secret, denied being a spy. The whistleblower said the leak of 11.5m documents from the Panamanian law firm Mossack Fonseca had triggered a "new, encouraging global debate," thanks to the publication last month of stories by an international consortium of newspapers, including the Guardian. The source gave Suddeutsche Zeitung leaked documents from Mossack Fonseca's internal database in real time installments. The papers included details of the beneficial owners of offshore companies, passport copies, and emails. The source said they decided to act after understanding the "scale of the injustices" the documents described. Mossack Fonseca denies wrongdoing and says its operations in Panama and elsewhere are "beyond reproach." Intriguingly, the source said they originally offered the documents to "several major media outlets." Editors reviewed the Panama Papers but in the end "chose not to cover them," they alleged. It is unclear which media organizations declined the material. The anonymous whistleblower also approached WikiLeaks -- again without success. "Even WikiLeaks didn't answer its tip line repeatedly," the source complained, adding: "The media has failed." The source used the name "John Doe" when they approached Germany's Suddeutsche Zeitung newspaper.