that consulting group cambridge analytic have managed to access data belonging to eighty seven million facebook users without their knowledge or consent. are you willing to do your business model. have made and are continuing to make changes to reduce the amount of. your business model. congresswoman i'm not sure when. it's the biggest crisis in the social networks fourteen year history while it's well known that the company makes its money out of advertising few people understand how it all works in practice and the idea that the platform could have enabled foreign actors to influence the twenty six thousand us election has sent alarm bells ringing. protect our planet.