Aleksandr Kogan, who created tools for Cambridge Analytica that allowed the political consultancy to psychologically profile and target voters, bought the data from the microblogging website in 2015, before the recent scandal came to light.
Facebook had collected certificates from both the firms in 2016-17 that data collected by them using "thisisyourdigitallife" was accounted for and destroyed.
British data analytics firm Cambridge Analytica is at the centre of a controversy in India, the United States and Britain after two newspapers reported on Sunday that the company harvested personal data about Facebook users beginning in 2014. How does that matter, what does it entail and should you be worried? All these answers and more, explained right here.
The social media giant's CEO announced that it will change how it shares data with third-party apps.
Alexandr Kogan, the Cambridge University researcher who developed the app used by Cambridge Analytica, claimed he has been made a scapegoat.
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