What are the Cambridge Analytica Files?

Working with two whistleblowers who helped set up Cambridge Analytica, the Observer and Guardian have spent a year analysing documents, gathering eyewitness reports and working with whistleblowers to untangle a highly complex story of elections in the digital age. In this series we expose:

  1. 1How data analytics firm Cambridge Analytica used people’s Facebook data for political campaigning.
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  2. 2How Cambridge Analytica is connected to AggregateIQ — the digital agency used by the Vote Leave official campaign for Brexit.
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  3. 3Questions arising around how the Vote Leave campaign operated in the run up to the referendum.
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Cambridge Analytica is currently being investigated on both sides of the Atlantic. It is a key subject in two inquiries in the UK — by the Electoral Commission, into the firm's possible role in the EU referendum and the Information Commissioner's Office, into data analytics for political purposes — and one in the US, as part of special counsel Robert Mueller's probe into Trump-Russia collusion.