How Cambridge Analytica’s whistleblower became Facebook’s unlikely foil

The crisis ravaging Facebook started when a young researcher, regretful over his role in turning data on an estimated tens of millions of U.S. voters into a high-tech political persuasion machine, decided to come forward with his story. And he imagined that Facebook, whose user profiles were part of that effort, could be a partner in helping to exhume this painful truth and perhaps embrace some changes to its privacy policy.