Islamic State has lost most of the territory it once held in Syria and Iraq. It is vying for survival with other, sometimes stronger, extremist groups. But one sphere where Islamic State still reigns supreme among terrorists is in cyberspace. In a survey of about 1,000 Facebook profiles, the Counter Extremism Project, a nonpartisan policy organization, documented Islamic State supporters in 96 countries, including in such disparate locations as Namibia, Argentina and the Dominican Republic. The research shows the vast spread of Islamic State influence and gives an idea where the group’s soldiers may return to after fighting for the group. “By having this big network, their propaganda is constantly being disseminated and spread, and that’s a key thing for the group,” said Robert Postings, a researcher who co-authored the study. “This way, they can continue to radicalize people and inspire attacks.”