WEIS has no formal proceedings, but preproceedings are made available online. Here are links to the papers for WEIS 2002, WEIS 2003, WEIS 2004 and WEIS 2005. Selected papers from WEIS 2002 and WEIS 2003 were published in a recent book, Economics of Information Security, while selected papers from WEIS 2004 appeared in the January 2005 issue of IEEE Security and Privacy.
For background and more links, see also Ross Anderson's Economics and
Security Resource Page, and Alessandro Acquisti's page on the Economics of