Matthew Henman, the head of IHS Jane's Terrorism and Insurgency Centre, told CNBC on Tuesday that both Malaysia and the nearby Philippines were in focus for signs of ISIS activity.
"Southeast Asia — particularly the Philippines and Malaysia — and areas of West Africa bordering Nigeria are countries we are watching closely for indications of Islamic State operational activity. Beyond that, an official Islamic State attack in Western Europe, particularly Belgium, Germany, U.K., Netherlands, and Italy (following on from Paris), is very much on our radar currently," he said.
It is unclear though whether the Southeast Asia region is a major point of interest for ISIS, whose core base is in Syria and Iraq.
"There is no evidence that Southeast Asia features prominently in the strategic calculus of the ISIS leadership in Raqqa," Joseph Chinyong Liow, a senior fellow at the Brookings Center for East Asia Policy Studies, said in article in February.
What's not in doubt is that ISIS's attack strategy is globalizing.