He admires the footballer Ronaldo and yet has published sensitive data about him. Rui Pinto aka “John” wants football to be clean. That's why he started a silent revolt against clubs, managers and players. Three years later, Pinto published the biggest data leak in history, the Football Leaks. The consequences: dozens of investigations across Europe, Ronaldo convicted, and even the FIFA President is under attack. Pinto himself is now sitting under house arrest with an ankle bracelet on his leg and is facing extradition and prison. Because the question is: Is he a whistleblower or a criminal hacker? How does he see it? And what motivates this young person? Our reporters Hendrik and Nino were part of the Football Leaks research team and were now able to speak to him exclusively. For you: the background piece.