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This paper reviews available research on how the internet facilitates radicalisation and measures to prevent it. It briefly canvasses evidence on the extent to which the internet contributes to radicalisation broadly, and who is most susceptible to its influence, before delving further into the mechanisms underpinning the relationship between the internet and violent extremism.

High-level approaches to combating internet-facilitated radicalisation, including content removal, account suspensions, reducing anonymity, and counternarrative and education campaigns, are mapped against these mechanisms. This illustrates how these approaches can disrupt radicalisation and assists researchers, policymakers and practitioners to identify potential gaps in existing counterterrorism and countering violent extremism regimes. Research on the implementation and outcomes of these approaches is also summarised.

Following the January 6 insurrection on the US Capitol, we sought to explore how two social media platforms were being used concurrently to disseminate far-right memes and discourse. Our study employs a mixed-methods approach to collect a large data set of images from 4chan/pol/ and using the “#stopthesteal” hashtag on Twitter between 1 January 2021 and 13 January 2021. Our findings reveal how each platform influenced the usage of memes toward identity building and far-right activism in the days leading up to and immediately after the insurrection. Our findings reveal that Twitter was used to mobilize users leading up to January 6 but led to in-fighting among the pro-Trump crowd in the days after. Meanwhile 4chan/pol users took advantage of the Overton window of the Insurrection to disseminate far-right ideology and attempt to recruit and radicalize disgruntled Trump supporters after the insurrection was deemed a failure.

Previous research has highlighted the prominent behavior of lone wolf terrorists to produce and share a manifesto publicly, outlining their frustrations and motivations for their eventual terrorist attack. This article aims to explore this phenomenon, focusing on the timelapse between when a terrorist manifesto is posted online and when the eventual attack occurs, discussing the time difference between the two events for 12 cases of lone wolf terrorism. The results revealed that the average time lapse between when a manifesto was posted online and when the terrorist attack occurs is one hour, 43 min. Limitations and implications are discussed in detail.

Social media platforms, such as Instagram, are regularly misused for spreading covert (Islamic) extremist propaganda. Affect and emotion are central tools used in extremist propaganda, but there is little research into the combined employment of different social media elements, such as hashtags, visuals, and texts, in the context of propaganda. This study contributes to closing this gap. Using the German group Generation Islam as a case study, we examined the group’s Instagram activity (N = 1,187 posts) over the course of 2 years. To reflect the platform users’ logic, we (a) examined affect in hashtag networks in which users can come across propagandistic content, (b) employed deep learning to examine the emotional valence transmitted in the visuals, and (c) used automated linguistic analysis to describe collective action cues contained within the texts. The results are novel, as they provide nuanced insights into extremist propaganda’s employment of affect and emotions across Instagram’s affordances.

This report draws on existing literature; fresh interviews with gamers, gaming company executives, and experts; and findings from a multinational survey of gamers conducted in January 2023.

Social Media and Terrorism are often studied together and have become the focus of many authors in recent years. Therefore, this study aims to evaluate international publication trends on social media and terrorism, using the Scopus database through bibliometric analysis from 2009 to 2022. Data visualization and analysis were conducted using Microsoft Excel and VOSviewer. The results showed that the international publications trend reached a peak in 2018, with 103 publications emphasizing various topics, such as social media, terrorism, Twitter, terrorist attacks, and several issues related to terrorist activities and digital platforms. The United States was also the most common country of publication with the highest number of affiliated authors. In addition, the authors with the most published documents were Tsikrika T. and Vrochidis S., with the majority of reports prioritizing social sciences. These results are expected to contribute to the novelty of previous studies on social media and terrorism.