Facebook said on Wednesday the personal information of up to 87 million users, mostly in the United States, may have been improperly shared with political consultancy Cambridge Analytica, up from a previous news media estimate of more than 50 million.
The UK-based firm Cambridge Analytica is under fire for allegedly harvesting the data of tens of millions of Facebook users and using it to sway voters in the run-up to the 2016 Presidential election. But the data firm’s reach extends well beyond the US.
Facebook Chief Executive Mark Zuckerberg apologized on Wednesday for mistakes his company made in how it handled data belonging to 50 million of its users and promised tougher steps to restrict developers’ access to such information.
The consultancy at the heart of a storm over Facebook data greatly exaggerated its role in Donald Trump’s 2016 US presidential victory and would not have been able to sway an election result, the academic who provided the data said.