Facebook Inc has explained many times how personal information from as many as 87 million people was collected by a researcher and then sold to Cambridge Analytica, the political consultancy. That researcher has a different version of events, which he plans to outline in testimony to Congress on June 19.
Facebook has said Aleksandr Kogan collected user’s data through a personality quiz app called This Is Your Digital Life. But in testimony prepared for Tuesday’s appearance, Kogan said that it was a different app – created earlier and collecting data on fewer people – that was used to gather information for Cambridge Analytica, the UK firm that helped elect US President Donald Trump.