The Sunday Times’ tech correspondent brings on Mike Harris, founder of 89up, to talk about his work uncovering Russia’s election meddling in Brexit (2:25), the importance of Facebook groups in spreading misinformation (4:10), making an enemy of Russia (7:00), the government’s impending ‘fake news’ report (8:10), the “Mainstream Network” (9:20), Facebook’s complicity in anonymity (14:15), the problem with the master algorithm (17:30), how to fix it (19:45), and the business of chaos (22:35)