In June 2011, Google Ideas hosted the Summit Against Violent Extremism that brought together a group of over 80 people who were former survivors and perpetrators of radical extremism ranging from gang members, right-wing extremists, 9/11 victims, and jihadists in …

“Digital terrorism” isn’t a phrase one hears often. There might be good reason for that: it’s not abundantly clear what digital terrorism entails. Is it hacking into air traffic control to give dangerous instructions to pilots? Is it using YouTube to promote a violent, hateful cause? Is it setting up a Facebook group to give members a chance to voice a yea in favor of something offensive? Is it trolling comment areas and flaming an author?