by David Chaum In the rush to build out the web, it was structured around concepts taken from paper-based media. Now, many feel a strong need for a next level of security and privacy, a level that cannot be provided by such structures. What’s at stake is not only the future of social media, but that of democracy itself. Last week, while preparing a lecture, I searched quickly for some charts showing survey results for social media usage and privacy. The huge mismatch between what people want and what the…