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This study, commissioned by the European Parliament’s Policy Department for
Citizens’ Rights and Constitutional Affairs at the request of the LIBE Committee,
provides an overview of current approaches to countering terrorist narratives. The
first and second sections outline the different responses developed at the global
and European Union levels. The third section presents an analysis of four different
approaches to responding to terrorist narratives: disruption of propaganda
distribution, redirect method, campaign and message design, and government
communications and synchronisation of message and action. The final section
offers a number of policy recommendations, highlighting five interrelated ‘lines of
effort’ essential to maximising the efficiency and effectiveness of counterterrorism
and countering violent extremism strategic communication.

This study offers an empirical insight into terrorists’ use of the Internet. Although criminology has previously been quiet on this topic, behavior‐based studies can aid in understanding the interactions between terrorists and their environments. Using a database of 231 US‐based Islamic State terrorists, four important findings are offered: (1) This cohort utilized the Internet heavily for the purposes of both networking with co‐ideologues and learning about their intended activity. (2) There is little reason to believe that these online interactions are replacing offline ones, as has previously been suggested. Rather, terrorists tend to operate in both domains. (3) Online activity seems to be similar across the sample, regardless of the number of co‐offenders or the sophistication of attack. (4) There is reason to believe that using the Internet may be an impediment to terrorists’ success.

Policymakers have recently expressed concerns over the role of recommendation algorithms and their role in forming “filter bubbles”. This is a particularly prescient concern in the context of extremist content online; these algorithms may promote extremist content at the expense of more moderate voices. In this article, we make two contributions to this debate. Firstly, we provide a novel empirical analysis of three platforms’ recommendation systems when interacting with far-right content. We find that one platform—YouTube—does amplify extreme and fringe content, while two—Reddit and Gab—do not. Secondly, we contextualise these findings into the regulatory debate. There are currently few policy instruments for dealing with algorithmic amplification, and those that do exist largely focus on transparency. We argue that policymakers have yet to fully understand the problems inherent in “de-amplifying” legal, borderline content and argue that a co-regulatory approach may offer a route towards tackling many of these challenges.

Online radicalisation to terrorism has become a pervasive policy concern over the last decade. However, as a concept it lacks clarity and empirical support. In this article, we add an empirical and theoretical lens to this problem by analysing the trajectories of 231 Islamic State terrorists. We use cluster analyses to create typologies of individuals’ different online and offline antecedent behaviours, including the ways in which they engaged in networks with co-ideologues and how they prepared for their events. The findings suggest four types of pathway within our dataset: 1) The “Integrated” pathway which has high network engagement both online and offline, mostly made up of individuals that plotted as part of a group; 2) The “Encouraged” pathway contains individuals that acted more in the online domain at the expense of offline; 3) Terrorists in the “Isolated” pathway are defined by a lack of interaction across either domain; 4) The “Enclosed” pathway encompassed actors that displayed greater offline network activity, but still utilised the Internet for planning their activity. These typologies help to move beyond the dichotomy of online or offline radicalisation; there remain few individuals that either exclusively use the Internet or do not use it at all. Rather, we can conceptualise Internet usage on a spectrum in which these four typologies all sit.

This study explores how terrorists use financial technologies in their plots. Using a database of 231 US-based Islamic State actors, it analyses how they move money and make purchases, as well as whether the use of technology affects success. Fundamentally, terrorists opt for simplicity; there is little evidence of sophisticated financial plots. Terrorists tend to use the Internet in two ways: to make purchases and to coordinate transactions. Transactions via Money Service Businesses are more likely to be part of successful plots. Finally, the paper discusses factors which explain this simplicity as well as discussing whether this may change moving forward.

This article seeks to re-ontologize online radicalization. Individuals becoming terrorists after being exposed to online content have become a prescient concern for academics, policy makers, and journalists. Existing theoretical contributions to the concept have assumed that there are two ontological domains—online and offline—that can be meaningfully separated. This article will draw from several arguments from other fields which critique this position; the contemporary information environment enmeshes the two inseparably. This argument is then advanced to demonstrate that online radicalization is a redundant concept by drawing on empirical research as well as recent case studies of terrorism. Instead, scholars should consider holistic theories which account for a range of other factors beyond online communication technologies.