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The Internet is a transformative technology that terrorists are exploiting for the spread of propaganda and radicalizing new recruits. While al-Qaeda has a longer history, Islamic State is conducting a modern and sophisticated media campaign centered around online social networking. This article introduces and contextualizes the contributions to this Special Issue by examining some of the ways in which terrorists make use of the Internet as part of their broader media strategies.

This book explores the interface between terrorism and the internet and presents contemporary approaches to understanding violent extremism online.
The volume focuses on four issues in particular: terrorist propaganda on the internet; radicalisation and the internet; counter campaigns and approaches to disrupting internet radicalisation; and approaches to researching and understanding the role of the internet in radicalisation. The book brings together expertise from a wide range of disciplines and geographical regions including Europe, the US, Canada and Australia. These contributions explore the various roles played by the Internet in radicalisation; the reasons why terroristic propaganda may or may not influence others to engage in violence; the role of political conflict in online radicalisation; and the future of research into terrorism and the internet. By covering this broad range of topics, the volume will make an important and timely addition to the current collections on a growing and international subject.

This book will be of much interest to students and researchers of cyber-security, internet politics, terrorism studies, media and communications studies, and International Relations.

Terrorist use of the Internet has become a focus of media, policy, and scholarly attention in recent years. Terrorists use the Internet in a variety of ways, the most important being for propaganda purposes and operations-related content, but it is also potentially a means or target of attack. This book presents revised versions of a selection of papers delivered at the NATO Advanced Research Workshop (ARW) on ‘Terrorists’ Use of the Internet’ held in Dublin, Ireland in June 2016. One aim of the workshop was to nurture dialogue between members of the academic, policy and practitioner communities, so the 60 delegates from 13 countries who attended the workshop included representatives from each of these. The participants encompassed a wide range of expertise (including engineering, computer science, law, criminology, political science, international relations, history, and linguistics) and the chapters contained herein reflect these diverse professional and disciplinary backgrounds. The workshop also aimed to address the convergence of threats. Following an introduction which provides an overview of the various ways in which terrorists use the Internet, the book’s remaining 25 chapters are grouped into 5 sections on cyber terrorism and critical infrastructure protection; cyber-enabled terrorist financing; jihadi online propaganda; online counterterrorism; and innovative approaches and responses. The book will be of interest to all those who need to maintain an awareness of the ways in which terrorists use the Internet and require an insight into how the threats posed by this use can be countered.