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The edition of Dabiq, the online magazine of the Islamic State (IS), that followed the horrific Paris attacks (130 dead) glorified the work of what it called the “eight knights” who carried out the killings. It rejoiced, too, in the downing of a Russian airliner (224 dead), picturing the homemade bomb it said caused the crash. together, these constituted what the magazine called “blessed attacks” against “crusader nations”. Other “brave knights” who carried out terrorist attacks in Australia, America, Israel and Jordan in the autumn of 2015 are said to have “sacrificed their souls in the noblest of deeds in pursuit of Allah’s pleasure”.

Recent acts of terrorism and hate crimes have prompted a renewed focus on the possible links between internet content and offline violence. While some have focused on the role that social media companies play in moderating user-generated content, others have called for Congress to pass laws regulating online content promoting terrorism or violence. Proposals related to government action of this nature raise significant free speech questions, including (1) the reach of the First Amendment’s protections when it comes to foreign nationals posting online content from abroad; (2) the scope of so-called “unprotected” categories of speech developed long before the advent of the internet; and (3) the judicial standards that limit how the government can craft or enforce laws to preserve national security and prevent violence.

VOX-Pol Blog post.

In an era of social media, the lines between physical and virtual realities have become blurred. This is especially evident in recruitment activities by violent extremists. This article compares five case studies from the white power and militia movements to learn how extremists attract new members. The findings suggest that recruitment occurs through iterative interactions in virtual and physical spaces. These spaces are not isolated to a single movement; individuals instead move between them. The findings did not reveal a divergence between civilian vs military recruits. Nevertheless, more research is needed on the extent to which veterans recruit their peers.

Online social media platforms such as Twitter have been found to be misused by extremist groups, including Islamic State of Iraq and Syria (ISIS), who attract and recruit social media users. To prevent their influence from expanding in the online social media platforms, it is required to understand the online behaviors of these extremist group users and their followers, for predicting and identifying potential security threats. We present an empirical study about ISIS followers’ online behaviors on Twitter, proposing to classify their tweets in terms of political and subjectivity polarities. We first develop a supervised classification model for the polarity classification, based on natural language processing and clustering methods. We then develop a statistical analysis of term-polarity correlations, which leads us to successfully observe ISIS followers’ online behaviors, which are in line with the reports of experts.

Al-Qaeda’s media strategy in 2009 reflected the group’s attempts to meet the triple challenge of a shifting media landscape, its enmeshment in the Afghanistan-Pakistan nexus, and the global jihadist movement’s failures over the last several years. The results are ambiguous. Al-Qaeda appears to be holding the attention of the faithful, but it faces a rising din of competing voices, an Internet that is more and more of a mixed blessing, and less resonance in mainstream Arab media than in years past.