The Handbook on Democracy and Security offers an insightful new interpretation of the topic that reframes the contemporary challenge of democracy away from competing ideologies or external existential threats, and centres on the security of democracy in the minds and lived experience of its citizens. With a global focus, it provides a cutting edge understanding of contemporary developments in democratic breakdown, investigating the role of new media, social media and the Internet. Expert contributors explore how democracy is affected by the resurgence of populism, terrorism and migration alongside the decline of independent mass media and associated conspiracy theories. The Handbook further argues that the security of government by the people is best understood through the security of people and examines the analysis of democratic security. Providing a diverse range of perspectives on how democratic breakdown occurs, this Handbook will be an excellent read for political scientists interested in human security and the effect of social media on democracy. Policymakers interested in policy prescriptions and stabilizing democratic backsliding will also find this an illuminating and informative resource.