'Utterly horrifying': ex-Facebook insider says covert data harvesting was routine

Hundreds of millions of Facebook users are likely to have had their private information harvested by companies that exploited the same terms as the firm that collected data and passed it on to Cambridge Analytica, according to a new whistleblower.
Read more: https://www.theguardian.com/news/2018/mar/20/facebook-data-cambridge-analytica-sandy-parakilas?source=Snapzu