Key revelations included how Facebook executives handled politicized lies, including Donald J. Horwitz and other reporters cleverly packaged under a catchy rubric, The Facebook Files. 13, The Journal justified her confidence with a meticulous rollout that included 11 major articles by Mr. She became one of the greatest sources of the century, turning over the tens of thousands of pages of internal documents she had collected. Haugen told me in a phone interview from her home in Puerto Rico, “and one of the reasons I went with him is that he was less sensationalistic than other choices I could have made.” She also got the impression that he would support her as a person, rather than as a mere source who could supply him with the inside information she had picked up during her nearly two years as a product manager at Facebook. She liked that he seemed thoughtful, and she liked that he’d written about Facebook’s role in transmitting violent Hindu nationalism in India, a particular interest of hers. Frances Haugen first met Jeff Horwitz, a tech-industry reporter for The Wall Street Journal, early last December on a hiking trail near the Chabot Space & Science Center in Oakland, Calif.