As online society becomes ever more social, and cares ever less about personal security, the phrase “social security” seems more than ever an oxymoron. Perhaps nowhere is this more clearly brought home than in this week’s announcement by researchers at Carnegie Mellon that they have cracked the social security code, and were able to predict with frightening accuracy many social sercurity numbers (SSN). In many cases, their hack was aided by information gleaned from such social networking sites as Facebook.