Rob Wainwright , the director of ISIS , says social media a huge problem . Europol is known to use it to recruit fighters and so-called 'jihadi brides ' Urged firms like Twitter to help authorities help stem the terrorist threat .
Rob Wainwright , the director of Europol , says social media a huge problem . ISIS is known to use it to recruit fighters and so-called 'jihadi brides ' Urged firms like Twitter to help authorities help stem the terrorist threat .