Mindf*ck: Cambridge Analytica and the Plot to Break America

Christopher Wylie was the research director of Cambridge Analytica — the data firm that harvested the personal data of tens of millions of Facebook users without consent and used it to build psychographic profiles for political micro-targeting. He was also the whistleblower who brought the operation to public attention, working with journalists at The Guardian and The Observer whose reporting triggered the biggest data privacy scandal in the history of social media. Mindf*ck is his firsthand account of how Cambridge Analytica was built, what it actually did, and what it was designed to achieve.

The book is essential not because Cambridge Analytica's specific techniques were uniquely powerful — the evidence for the magnitude of their influence remains contested — but because it documents, from inside, the mentality and methodology of an organisation that treated democratic electorates as data sets to be manipulated. Wylie is specific about the operational mechanics: the data acquisition, the psychographic modelling, the ad targeting, the relationship with Bannon and Mercer. For practitioners advising clients on data privacy, electoral integrity, or the political use of personal data, this is the most detailed insider account available. It also raises questions that have not been adequately answered about what the next iteration of this kind of operation will look like.