Twitter also sold data users

Twitter also sold data from its users.

GSR was founded by Aleksandr Kogan. He is also the one who made a personality test for Facebook. The personal data he received with it ended up at the infamous Cambridge Analytica.

GSR gained access to Twitter systems in 2015. There were tweets that were placed between December 2014 and April 2015. It is not known how many tweets and how many users it is.