O’Reilly Verlag

Daniel J. Barrett has been immersed in Internet technology since 1985. Currently working as a software engineer, Dan has also been a heavy metal singer, Unix system administrator, university lecturer, web designer, and humorist. He is the author of O'Reilly's Linux Pocket Guide, and he is the coauthor of Linux Security Cookbook, and SSH, The Secure Shell: The Definitive Guide.

Robert G. Byrnes, Ph.D., has been hacking on Unix systems for twenty years, and has been involved with security issues since the original Internet worm was launched from Cornell University, while he was a graduate student and system administrator. He is currently a software engineer at Curl Corporation, and has worked in the fields of networking, telecommunications, distributed computing, financial technology, and condensed matter physics.

Richard Silverman first touched a computer as a college junior in 1986, when he logged into a DEC-20, typed MM to send some mail, and was promptly lost to the world. He eventually resurfaced and discovered he had a career, which was convenient but somewhat disorienting, since he hadn't really been looking for one. Since earning his B.A. in computer science and M.A. in pure mathematics, Richard has worked in the fields of networking, formal methods in software development, public-key infrastructure, computer security, and Unix systems administration. He is a co-author on two O'Reilly titles: SSH, The Secure Shell (The Definitive Guide), and the Linux Security Cookbook.