Computer security is now a public policy issue. But while an understanding of the technology involved is fundamental to crafting good policy, there is little involvement of technologists in policy discussions. We need public-interest technologists: people from our fields helping craft policy. This is increasingly critical to both public safety and overall social organization. The defining policy question of the Internet age is this: How much of our lives should be governed by technology, and under what terms? We need to be involved in that discussion.