Frances Haugen

Frances Haugen (born 1984) is a data engineer who became the most consequential tech whistleblower of her generation. After stints at Google, Yelp, and Pinterest, she joined Facebook’s civic integrity team in 2019 — and left in 2021 with roughly 21,000 internal documents showing the company knew its algorithmic ranking systems amplified harm and chose growth anyway.

The algorithm on trial

Her October 2021 Senate testimony reframed the platform debate as an AI debate: the villain was not any single post but the machine-learning engagement optimization deciding what billions of people see. She described “anger-driven virality,” a company “operating in the shadows, hiding its research from public scrutiny,” and recommendation systems that could steer a teenager from healthy recipes to anorexia content in days. The disclosures — published as the Facebook Files by the Wall Street Journal — triggered hearings on both sides of the Atlantic and helped shape the EU’s platform-accountability rules.

She has since founded the nonprofit Beyond the Screen and published a memoir, “The Power of One” (2023). In a June 2026 El País interview she argued things have deteriorated since her leak, and predicted that the next major legal battle will be over the AI companions children use — a warning that landed as juries began finding platforms liable for algorithmic addiction among minors. Aaron Sorkin’s film about her, “The Social Reckoning,” arrives in late 2026.