Data consultancy Cambridge Analytica acquired Facebook users' personal data through multiple quizes and questionnaires, including one called "sex compass," a former employee told a UK Parliament committee on Tuesday.
As a result, it's likely that the number of Facebook users affected by Cambridge Analytica's data-gatherizg activities far exceeds the previously stated figure of 87 million users, said Brittany Kaiser, who until January worked as a business director for the firm.
Revelations surfaced last month that Cambridge Analytica acquired Facebook user data through a quiz created by University of Cambridge researcher Aleksandr Kogan and his company Global Science Research. Following the revelations, Facebook updated its data policy and (including those who'd taken the quiz and their friends) that their data had been acquired by Kogan.
But in written evidence provided to Parliament's Digital, Culture, Media and Sport (DCMS) committee, which is investigating the problem of fake news, Kaiser said her former employer acquired data through multiple surveys, not just Kogan's quiz. They were conducted "by CA or its partners, usually with a Facebook login," she said.
"I believe it is almost certain that the number of Facebook users whose data was compromised through routes similar to that used by Kogan is much greater than 87 million, and that both Cambridge Analytica and other unconnected companies and campaigns were involved in these activities," said Kaiser.
A Facebook spokesperson said in a statement that the company is investigating all apps that had access to large amounts of information before it changed its rules in 2014 to dramatically reduce data access.
"We will conduct a full audit of any app with suspicious activity. And if we find developers that misused personally identifiable information, we will ban them and tell everyone affected," he said.
Last week, Facebook CEO Mark Zuckerberg spent 10 hours over two daysabout the Cambridge Analytica scandal, the social network's policies for protecting user data and other topics.
Cambridge Analytica downplayed the latest development.
"It's widely known that like other marketing agencies we sometimes collect personality data using a research panel with an appropriate statement of consent," said Cambridge Analytica in a statement. "These surveys are entirely unconnected to the GSR/Kogan data for 30 million users that we lawfully licensed in 2014 and then deleted when Facebook asked us to do so."
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