https://finance.yahoo.com/news/facebook-faces-u-k-fine-over-privacy-scandal-042748621--finance.html

Cambridge Analytica, a London firm financed by wealthy Republican donors, worked for the 2016 Trump campaign and for a while employed Steve Bannon, the Trump campaign CEO and later a White House adviser.

Facebook said the company illicitly gained access to personal information of up to 87 million users via an academic intermediary, although the firm said the number was much smaller than that. According to former Cambridge Analytica data scientist Christopher Wylie, a whistleblower, the firm aimed to construct psychographic profiles it could use to sway the votes of susceptible individuals.