We're creating a world where technology permeates our economies, social interactions, and intimate selves. It's a symbiotic relationship. Facebook, fitness trackers, Uber, smart homes, electronic voting, Internet advertising, and credit card payments: we would have trouble living without these large-scale socio-technical systems, and they couldn't exist without our information. However, they bring a variety of new security threats from users, from outsiders, and from the corporations and governments that control them. This talk looks back at what we've learned from past attempts to secure these systems, and forward at what technologies, laws, regulations, economic incentives, and social norms we need to secure them in the future.