Paul Lewis and Paul Hilder in The Guardian:
The blueprint for how Cambridge Analytica claimed to have won the White House for Donald Trump by using Google, Snapchat, Twitter, Facebook and YouTube is revealed for the first time in an internal company document obtained by the Guardian.
The 27-page presentation was produced by the Cambridge Analytica officials who worked most closely on Trump’s 2016 presidential campaign.
A former employee explained to the Guardian how it details the techniques used by the Trump campaign to micro-target US voters with carefully tailored messages about the Republican nominee across digital channels.
Intensive survey research, data modelling and performance-optimising algorithms were used to target 10,000 different ads to different audiences in the months leading up to the election. The ads were viewed billions of times, according to the presentation.
The document was presented to Cambridge Analytica employees in London, New York and Washington DC weeks after Trump’s victory, providing an insight into how the controversial firm helped pull off one of the most dramatic political upsets in modern history.