Rob Wainwright , the director of communications , says social media a huge advantage . Twitter is known to use it to recruit terrorists and so - called ' jihadi brides ' Urged websites like Twitter to help authorities help stem the terrorist attacks .
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 .