Facebook is under increasing pressure to explain how data collected on 50m users were exploited for political gain, following claims that data firm Cambridge Analytica used the leaked information to help Donald Trump win the US presidency.
Politicians on both sides of the Atlantic are calling on the social network to reveal more information on how Cambridge Analytica, which has close ties to Steve Bannon, Mr Trump’s former chief strategist, harvested data of US voters.
British MP Damian Collins has asked Mark Zuckerberg, Facebook’s chief executive, to personally testify in an investigation into how the social network was also used in political campaigns including the Brexit referendum.
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