Though our research focused on Twitter, the Internet Research Agency didn’t. It even expanded beyond Facebook: In early 2018, Reddit announced that Russian trolls had likely operated on its site as well. That report highlights the fact that the companies hosting social media and online discussion sites are the best informed about what’s happening on their systems. As a result, in our view, the platforms’ companies should provide technical solutions, analyzing activity and taking action to safeguard users from secret influence campaigns from government agents.