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Debates around the effectiveness of high-profile Twitter account suspensions and similar bans on abusive users across social media platforms abound. Yet we know little about the effectiveness of warning a user about the possibility of suspending their account as opposed to outright suspensions in reducing hate speech. With a pre-registered experiment, we provide causal evidence that a warning message can reduce the use of hateful language on Twitter, at least in the short term. We design our messages based on the literature on deterrence, and test versions that emphasize the legitimacy of the sender, the credibility of the message, and the costliness of being suspended. We find that the act of warning a user of the potential consequences of their behavior can significantly reduce their hateful language for one week. We also find that warning messages that aim to appear legitimate in the eyes of the target user seem to be the most effective. In light of these findings, we consider the policy implications of platforms adopting a more aggressive approach to warning users that their accounts may be suspended as a tool for reducing hateful speech online.

Does the internet enable the recruitment of transnational terrorists? Using geo-referenced population census data and personnel records from the Islamic State in Iraq and the Levant—a highly tech-savvy terrorist organization— this paper shows that internet access has facilitated the organization’s recruitment of foreign fighters from Tunisia. The positive association between internet access and Daesh recruitment is robust to controlling for a large set of observable and unobservable confounders as well as instrumenting internet access rates with the incidence of lightning strikes.

Which functions do social media fill for non-state armed groups in countries with internal armed conflict? Building on conflict data, interviews and media monitoring, we have reviewed the use of social media by Myanmar’s nine most powerful armed groups. The first finding is that they act like states, using social media primarily to communicate with their constituents. Second, they also use social media as a tool of armed struggle, for command and control, intelligence, denunciation of traitors, and attacks against adversaries. Third, social media serves for national and international outreach. Like Myanmar’s national army, the armed groups have combined prudent official pages with an underworld of more reckless profiles and closed groups that often breach Facebook’s official community standards. In February 2019, when Facebook excluded four groups from its platform, they lost much of their ability to reach out and act like states. Yet they kept a capacity to communicate with their constituents through closed groups, individual profiles and sophisticated use of links and shares. Finally, the article affirms that the Facebook company, in the years 2018–2020,took upon itself a role as an arbiter within Myanmar’s internal conflicts, deciding what information was allowed and disallowed.

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.

Terrorism, crime, and war are all familiar notions; however, the way in which these have been altered through cyberspace is not yet fully, nor unanimously, understood through definitions, theories, and approaches. Although the threat level of terrorism in the UK has lowered to moderate, the threat posed by cyber terrorism has nonetheless heightened throughout the COVID pandemic due to the greater necessity and presence of technology in our lives. This research aimed to highlight the necessity for a unanimous cyber terrorism definition and framework and further aimed to determine what perceptions are held by the general public regarding cyber terrorism through a mixed methods approach. The literature review confirms that there is an absence of a unanimously agreed upon definition of cyber terrorism, and furthermore that the existing academic definitions are not compatible with UK legislation. In addition, the literature review highlights an absence of a cyber terrorism framework that classifies what kind of terrorist activity is cyber enabled or cyber dependent. Quantitative data from the online survey find a couple of significant effects implying the necessity for greater diversity amongst stakeholders which could potentially enhance the detection and prevention of terrorism in the UK. The qualitative data find that although there is some agreement amongst the sample population in views held towards cyber terrorism, some misconceptions are nonetheless present which could have implications on the general public’s ability to identify and report cyber terrorist activity. Overall, the findings from the literature review and the primary data collection aid in developing a cyber terrorism definition that is compatible with UK legislative definitions, and further aids in developing a terrorist activity framework that succinctly highlights the inextricable links between traditional, cyber enabled, and cyber-dependent terrorism.

There is an increasing threat posed by terrorism in modern day, and with the internet enabling new ways of disseminating online terrorist propaganda, audiences and support for terrorist groups are growing. The complex linkage between society and technology is become ever more critical as the world continues to shift more day-to-day life online, and this notion has increased greatly during the coronavirus global pandemic where online platforms have become an essential aspect for communicating. The spread of online terrorist propaganda has sparked concerns about the governance of Internet. However, Internet governance is multifaceted, complex and can be examined through various lenses. This paper argues that there is a need for a socio-technical perspective, exploring the inextricable linkages between societies and technology, on Internet governance. Focusing on the UK’s approach to governing terrorist propaganda, the paper highlights the strengths and limitations of the model of national law and regulation.