Sacramento: Facebook Inc said on Wednesday that the personal information of up to 87 million users may have been improperly shared with political consultancy Cambridge Analytica, up from a previous news media estimate of more than 50 million.
Most of the 87 million people whose data was shared with Cambridge Analytica, which worked on US President Donald Trump’s 2016 campaign, were in the United States, Facebook Chief Technology Officer Mike Schroepfer wrote in a blog post.
Facebook said it was taking steps to restrict the personal data available to third-party app developers. Facebook chief executive Mark Zuckerberg will testify about the matter next week before the U.S. House Energy and Commerce Committee, the panel said on Wednesday.
Shares in Facebook were down 1.4 percent on Wednesday to $153.90. They are down more than 16 percent since the Cambridge Analytica scandal broke. The previous estimate of more than 50 million Facebook users affected by the data leak came from two newspapers, the New York Times and London’s Observer, based on their investigations of Cambridge Analytica.