Strongbox and Aaron Swartz : The New Yorker:

Aaron Swartz was not yet a legend when, almost two years ago, I asked him to build an open-source, anonymous in-box. His achievements were real and varied, but the events that would come to define him to the public were still in his future: his federal criminal indictment; his leadership organizing against the censorious Stop Online Piracy Act; his suicide in a Brooklyn apartment. I knew him as a programmer and an activist, a member of a fairly small tribe with the skills to turn ideas into code—another word for action—and the sensibility to understand instantly what I was looking for: a slightly safer way for journalists and their anonymous sources to communicate.