Facebook discovered in December 2015 that Aleksandr Kogan's 'thisisyourdigitallife' app had harvested data from approximately 87 million users and transferred it to SCL Group/Cambridge Analytica. Facebook contacted Cambridge Analytica, obtained certifications of data deletion, and did not notify affected users. Internal documents produced in the 2018 FTC investigation showed Facebook had identified the policy enforcement gap but treated it as resolved by the deletion certifications. Christopher Wylie's whistleblower disclosures to the New York Times and The Guardian (17 March 2018) revealed that the data had not been deleted. Facebook paid a $5 billion FTC settlement (24 July 2019) and a $100 million SEC fine. The claim that Facebook knowingly concealed this data harvest from regulators and users is partially supported by the documentary record.