"With the increasing popularity of social media over the last few years, terrorist groups have flocked to the popular web sites to spread their message and recruit new members. As terrorist groups establish a presence in these social networks, they do not rely on direct connections to influence sympathetic individuals. Instead, they leverage 'friend of a friend' relationships where existing members or sympathizers bridge the gap between potential recruits and terrorist leadership or influencers. As anti-Western propaganda flows through these social networks, homegrown terrorists and lone wolf terrorists have been inspired to commit acts of terrorism. These terrorist social networks in social media can be uncovered and mapped, providing an opportunity to apply social network analysis algorithms. Leveraging these algorithms, the main influencers can be identified along with the individuals bridging the gap between the sympathizers and influencers."
Worldcomp '13 Draft Paper Submission: http://www.world-comp.org/