Carole Cadwalladr & Emma Graham-Harrison - 50 million Facebook profiles harvested for Cambridge Analytica in major data breach // How Facebook’s destructive ethos imperils democracy
Whistleblower describes how firm linked to former Trump adviser Steve Bannon compiled user data to target American voters The data analytics firm that worked with Donald Trump’s election team and the winning Brexit campaign harvested millions of Facebook profiles of US voters, in the tech giant’s biggest ever data breach, and used them to build a powerful software program to predict and influence choices at the ballot box. A whistleblower has revealed to the Observer how Cambridge Analytica – a company owned by the hedge fund billionaire Robert Mercer, and headed at the time by Trump’s key adviser Steve Bannon – used personal information taken without authorisation in early 2014 to build a system that could profile individual US voters, in order to target them with personalised political advertisements. How Facebook’s destructive ethos imperils democracy The revelations in our lead story today are shocking not just because ...