Video sharing platforms like YouTube are increasingly targeted by aggression and hate attacks. Prior work has shown how these attacks often take place as a result of “raids,” i.e., organized efforts by ad-hoc mobs coordinating from third-party communities. Despite the increasing relevance of this phenomenon, however, online services often lack effective countermeasures to mitigate it. ...

In this paper we present a novel interactive multimodal learning system, which facilitates search and exploration in large networks of social multimedia users. It allows the analyst to identify and select users of interest, and to find similar users in an interactive learning setting. Our approach is based on novel multimodal representations of users, words ...

Hate groups are increasingly using multiple social media platforms to promote extremist ideologies. Yet we know little about their communication practices across platforms. How do hate groups (or “in-groups”), frame their hateful agenda against the targeted group or the “out-group?” How do they share information? Utilizing “framing” theory from social movement research and analyzing domains ...

Extreme digital speech (EDS) is an emerging challenge that requires co-ordination between governments, civil society and the private sector. In this report, a range of experts on countering extremism consider the challenges that EDS presents to these stakeholders, the impact that EDS has and the responses taken by these actors to counter it. By focusing ...

This review presents the existing research on the role of the Internet in radicalization processes. Using a systematic literature search strategy, our paper yields 88 studies on the role of the Internet in a) right-wing extremism and b) radical jihadism. Available studies display a predominant interest in the characteristics of radical websites and a remarkable ...

The decision to target leaders of groups like ISIS to hamper their effectiveness has served as a longstanding principle of counterterrorism efforts. Yet, previous research suggests that any results may simply be temporary. Using insights from confiscated ISIS documents from Afghanistan to define the media leader roles that qualified for each level of the cascade, ...

This article is a systematic large-scale study of the reasons driving political fragmentation on social media. Making use of a comparative dataset of the Twitter discussion activities of 115 political groups in 26 countries, it shows that groups that are further apart in ideological terms interact less, and that groups that sit at the extremes ...

Considerable time has been spent examining how groups like AQAP and ISIS used their online magazines to reach and radicalize individuals in Western democratic states. This paper continues this investigation but shifts its analysis to focus on the ‘how-to’ or instructional content of these publications, an understudied part of the literature. One of the stated ...

This article will explore three crucial parameters that have been taken into consideration to attract millennials towards the Islamic State or Islamic State of Iraq and Syria (ISIS) brand: the first parameter is story creation around the historical significance of Islamic prophecies justifying the ISIS brand. Second is the symbolisms attached to the ISIS brand ...

This policy brief traces how Western right-wing extremists have exploited the power of the internet from early dial-up bulletin board systems to contemporary social media and messaging apps. It demonstrates how the extreme right has been quick to adopt a variety of emerging online tools, not only to connect with the like-minded, but to radicalise ...