Cambridge Analytica used our secrets for profit, the same data could be used for public good – William David Watkin

Ever since it was revealed that Cambridge Analytica had taken data from 87m users via a Facebook app that exploited the social media site’s privacy settings, it has been suggested that anything from Donald Trump’s election in the US to the European Union referendum result in the UK could have been the result of the persuasive power of targeted advertisements based on voter preferences.