https://www.cnbc.com/2018/04/04/cambridge-analytica-says-no-more-than-30-million-people-impacted.html

The British political consulting firm at the center of Facebook's data scandal announced on Wednesday the data leak only affected 30 million users — a lower threshold than the "up to 87 million" claimed by Facebook.

"Cambridge Analytica licensed data for no more than 30 million people from GSR [Global Science Research], as is clearly stated in our contract with the research company. We did not receive more data than this," Cambridge Analytica wrote in an email.