This document discusses the Facebook-Cambridge Analytica data scandal. It provides background on how Cambridge Analytica, a political consulting firm, was able to access the personal data of millions of Facebook users in 2014 through an app called "This Is Your Digital Life." This data was then used without consent to develop "psychographic" profiles of users to target political advertisements, including in support of Donald Trump's 2016 presidential campaign. The document also notes the $70 billion drop in Facebook's market value in the aftermath of the scandal and explains why political groups use data from companies like Cambridge Analytica.