Trolls are to be found on every social media platform, and few have as intimate an experience and knowledge of trolling than Marianna Spring, the BBC’s first disinformation and social media correspondent. She discusses her book Among the Trolls, in which she tracks down both trolls and their victims, trying to work out where people’s vitriol comes from, why the information battle threatens society as a whole and how people get caught up in trolling and misinformation. Spring presents podcasts and documentaries investigating disinformation and social media for BBC Radio 4 podcasts, as well as for BBC Panorama and BBC Three. In conversation with writer and broadcaster, Adam Rutherford.