The verified Twitter Inc. page of Cambridge Analytica, displaying their logo and company name, sit on an Apple Inc. iPhone against a backdrop of the Facebook Inc. sign shown on a computer screen in this arranged photograph in London, U.K., on Thursday, March 22, 2018. Facebook Inc.s co-founder and chief executive officer Mark Zuckerberg has been called to appear before a House panel as fallout continues from revelations that Cambridge Analytica had siphoned data from some 50 million Facebook users as it built a election-consulting company that boasted it could sway voters in contests all over the world. Photographer: Luke MacGregor/Bloomberg via Getty Images
