John Viega, the founder and CEO of Stonewall Software, is a well-known security expert and the coauthor of Building Secure Software (Addison-Wesley) and Network Security with OpenSSL (O'Reilly). John is responsible for numerous software security tools and is the original author of Mailman, the GNU mailing list manager. He holds a B.A. and M.S. in computer science from the University of Virginia. John is also an adjunct professor of Computer Science at Virginia Tech (Blacksburg) and is a senior policy researcher at the Cyberspace Policy Institute. He serves on the technical advisory board for the Open Web Applications Security Project. He also founded a Washington, D.C.-area security interest group that conducts monthly lectures presented by leading experts in the field. He is the author or coauthor of nearly 80 technical publications, including numerous refereed research papers and trade articles.