Henry Farrell is an Irish political scientist and professor at the Johns Hopkins School of Advanced International Studies (SAIS). His research focuses on international politics, democracy, digital technology, and political economy, with particular attention to the ways networks and technology reshape global power. He has written extensively on the intersection of state authority, markets, and digital platforms, helping to shape debates on economic security and international order. His best-known book, "Underground Empire", co-authored with Abraham Newman, examines how control over global financial and information networks has become a powerful instrument of geopolitical influence in the twenty-first century.