Breaking point: How Mark Zuckerberg and Tim Cook became foes

At a confab for tech and media moguls in Sun Valley, Idaho, in July 2019, Tim Cook of Apple and Mark Zuckerberg of Facebook sat down to repair their fraying relationship.

For years, the CEOS had met annually at the conference, which was held by the investment bank Allen & Co., to catch up. But this time, Facebook was grappling with a data privacy scandal. Zuckerberg had been blasted by lawmakers, regulators and executives — including Cook — for letting the information of more than 50 million Facebook users be harvested by a voter-profiling firm, Cambridge Analytica, without their consent.