https://www.theguardian.com/technology/2018/mar/22/they-were-given-an-inch-and-took-100-miles-readers-on-cambridge-analytica-facebook-and-privacy

We asked you whether you’re thinking of deleting your Facebook account and to share your thoughts on data privacy

On Saturday the Observer revealed how data associated with 50m Facebook profiles was exploited by the company Cambridge Analytica. Since then the company which offers services to political parties and businesses who want to “change audience behaviour,” has been found to influence the Brexit vote, the US and Nigerian elections.