Tracking IS online

Tracking IS online. File photo dated 06/08/13 of someone using a laptop. Internet investigators have described how they are locked in a "cat and mouse game" with Islamic State as they attempt to dismantle the terrorist group’s vast and fluid online propaganda machine. Issue date: Monday September 7, 2015. Officers face a "huge challenge" as thousands of supporters and operatives shift from one platform to another, according to a senior expert on a specialist European unit established to target terrorist material on social media and other sites. The Press Association has learned the EU Internet Referral Unit (EU IRU) has identified 500 pieces of content, mostly relating to IS, in the two months since it was set up by Europol in July. See PA story POLICE Internet. Photo credit should read: Dominic Lipinski/PA Wire URN:24019779

picture alliance / Dominic Lipinski