“Surveillance”, as the security expert Bruce Schneier has observed, is the business model of the internet and that is true of both the public and private sectors. Given how central the network has become to our lives, that means our societies have embarked on the greatest uncontrolled experiment in history. Without really thinking about it, we have subjected ourselves to relentless, intrusive, comprehensive surveillance of all our activities and much of our most intimate actions and thoughts. And we have no idea what the long-term implications of this will be for our societies – or for us as citizens.