The Great Hack review – searing exposé of the Cambridge Analytica scandal

This chilling documentary lays bare the cynicism and chaos surrounding the data research company that harvested information from millions of Facebook users

'Data rights are human rights" is the rallying cry of this gripping, challenging documentary by Karim Amer and Jehane Noujaim, about the biggest scandal of our time: the gigantic question mark over the legality of the Brexit vote.

It is about the Trump campaign, the Leave.EU campaign and many other reckless electoral adventures all over the world and their connection with Cambridge Analytica, the British data research company that cunningly harvested information from millions of Facebook users and their friends via an innocuous-seeming "personality" questionnaire. They put this gigantic database to lucrative work with machine-tooled marketing campaigns for Trump and the Brexiters; after the company declared bankruptcy, its documentation may never come to light.