Twitter Sold Data Access to Cambridge Analytica–Linked Researcher

• Aleksandr Kogan had access to the data for single day in 2015 • Twitter has removed Cambridge Analytica as an advertiser

Twitter Inc.sold data access to the Cambridge University academic who also obtained millions ofFacebook Inc.users’ information that was later passed to a political consulting firm without the users’ consent.

Aleksandr Kogan, who created a personality quiz on Facebook to harvest information later used byCambridge Analytica, established his own commercial enterprise, Global Science Research (GSR). That firm was granted access to large-scale public Twitter data, covering months of posts, for one day in 2015, ...