https://www.theregister.co.uk/2018/04/17/former_cambridge_analytica_staffer_brittany_kaiser_dcms_committee_evidence/ >The number of Facebook users whose data was compromised via quizzes "is much greater than 87 million", Cambridge Analytica's former director of program development has told MPs. >In written evidence (PDF) to the Digital, Culture, Media and Sport Committee, Brittany Kaiser wrote: "Cambridge Analytica and other unconnected companies and campaigns were involved in these activities."