Aleksandr Kogan had one day access to Twitter users data in 2015
Twitter has confirmed to Bloomberg that it sold public data access to researcher Aleksandr Kogan. In 2015, Aleksandr Kogan’s firm Global Science Research (GSR) had paid for one day Twitter users data access. Twitter said they had selected a random sample of public tweets from the period between December 2014 and April 2015. They also conducted an internal review and did not find any access to private data of people who use Twitter. Since then the company has removed Cambridge Analytica and their affiliated entities as advertisers.