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The Islamic State, known as ISIS or ISIL, has exploited social media, most notoriously Twitter, to send its propaganda and messaging out to the world and to draw in people vulnerable to radicalisation.

Since late 2014, Islamic State of Iraq and Syria (ISIS) social networks on Twitter have been
subjected to periodic account suspensions. In a study of metrics for a network of English language
ISIS supporters active from June to October 2015, suspensions held the size and reach
of the overall network flat, while devastating the reach of specific users who have been
repeatedly targeted.
By analyzing a list of English-speaking ISIS adherents, we found:
• The number of readily discoverable English-speaking ISIS supporters on Twitter is
relatively small, usually fewer than 1,000 accounts.
• Extending the discovery process using advanced social network analysis produced a
network of fewer than 3,000 accounts at any given time.
• ISIS English-language social networks are extremely insular, meaning users mostly
follow and interact with each other.
• The number of users in the network who are based in Iraq and Syria appears to have
declined over time, partly because of suspension activity, but also because of operational
security concerns within ISIS and the deaths of some prominent Syria-based network
participants.
• The average number of Twitter followers any given ISIS supporter could expect was 300
to 400. Average follower counts were periodically reduced by aggressive waves of
suspensions. However, under typical conditions the average remained flat, as seen over a
30-day period beginning in late August, during which relatively few suspensions took
place.
• Over time, individual users who repeatedly created new accounts after being suspended
suffered devastating reductions in their follower counts.
• Network and individual declines persisted even when suspension pressure eased,
suggesting that suspensions diminish activity in ways that extend beyond the simple
removal of accounts.
• The amount of pro-ISIS content available on Twitter was also limited by suspensions,
since all of a user’s tweets are typically deleted when his or her account is suspended.
• ISIS supporters have deployed several countermeasures in an effort to offset the negative
effects of suspensions.
• Countermeasures include the use of applications and simple hacking techniques to
quickly create new accounts for users who have been suspended, as well as elaborate
tactics to rebuild follower networks. Some of these approaches are sophisticated, but they
have had only limited benefits.
• ISIS supporters have also explored the use of other social media platforms as a
supplement to Twitter, but they feel that a robust presence on Twitter and Facebook is
integral to their recruitment and propaganda efforts, and continue returning to those
platforms despite challenges.
Our analysis was based on a list of accounts maintained and promoted by ISIS supporters on
Twitter. The list was primarily billed as a resource for finding other ISIS supporters, but it
included some non-porter accounts, and the user who maintained the list did not follow all of
the listed accounts.

It is relatively easy to identify tens of thousands of social media users who have an interest in violent ideologies, but very difficult to figure out which users are worth watching. For students of extremist movements and those working to counter violent extremism online, deciphering the signal amid the noise can prove incredibly daunting. This paper sets out a first step in solving that problem. The authors have devised a scoring system to find out which social media accounts within a specific extremist circle were most influential and most prone to be influenced (a tendency we called exposure).

This article represents an initial exploration of the content and posting strategies of the current wave of racist flyer drops in the US, focusing specifically on a dataset of all documented flyers posted in 2018. The dataset was generated by the Anti-Defamation League (ADL) and augmented by the authors. The dataset is unique among open sources and includes a large number of incidents which were not reported in the media. The article consists of three parts. The first documents and briefly discusses the groups engaged in racist flyer development and drops. The second describes and characterises the text and image content of the flyers. The final section uses open sources and leaked material to describe the process by which flyer drops are instigated, planned and documented.

VOX-Pol Blog post.