Twitter lost 9 million users worldwide in the third quarter of 2018, according to the latest company earnings report.

Facebook grew during the same period in every market except Europe, where it lost a million monthly active users. But it has faced a backlash since a whistle-blower revealed in March 2018 that some 87 million people had their data improperly shared with Cambridge Analytica. It was the beginning of a months-long scandal that revealed the network was slow to respond when Russian operatives used it to spread misinformation to influence U.S. elections.