Tom Christiansen (T4) has been involved with Perl since day zero of its initial public release in 1987. Author of several books on Perl,
including The Perl Cookbook and Programming Perl from O'Reilly, Tom is
also a major contributor to Perl's online documentation. He holds
undergraduate degrees in computer science and Spanish and a Master's in
computer science. He now lives in Boulder, Colorado.
Mike Ciavarella (S7, S12, M7) has been producing and editing technical documentation since
he naively agreed to write application manuals for his first
employer in the early 1980s. He has been a technical editor for
MacMillan Press and has been teaching system administrators about
documentation for the past eight years. Mike has an Honours Degree in
Science from the University of Melbourne. After a number
of years working as Senior Partner and head of the Security Practice
for Cybersource Pty Ltd, Mike returned to his alma mater, the University
of Melbourne. He now divides his time between teaching software
engineering, providing expert testimony in computer security matters,
and trying to complete a Doctorate. In his ever-diminishing spare time,
Mike is a caffeine addict and photographer.
Lee Damon (M7, T8) has a B.S. in Speech Communication from Oregon State University. He
has been a UNIX system administrator since 1985 and has been active in SAGE
since its inception. He assisted in developing a mixed AIX/SunOS environment
at IBM Watson Research and has developed mixed environments for Gulfstream
Aerospace and QUALCOMM. He is currently leading the development effort
for the Nikola project at the University of Washington Electrical Engineering
Department. He is past chair of the SAGE Ethics and Policies Working Groups.
Mark-Jason Dominus (S4, S9) has been programming in Perl since 1992. He is a moderator of the comp.lang.perl.moderated newsgroup, the author of the Text::Template, Tie::File, and Memoize modules, a contributor to the Perl core, and author of the perlreftut man page. His work on the Rx regular expression debugger won the 2001 Larry Wall Award for Practical Utility. He lives in Philadelphia with his wife, daughter,
and several plush octopuses.
Jacob Farmer (S5, S10) is the CTO of Cambridge Computer Services, a specialized
integrator of backup systems and storage networks. He has over 15
years of experience with storage technologies and writes an expert
advice column for InfoStor magazine. He is currently writing a book
on storage networking.
Rik Farrow (S1, M1) provides UNIX and Internet security consulting and training. He has been working with UNIX system security since 1984 and with TCP/IP networks since 1988. He has taught at the IRS, Department of Justice, NSA, NASA, US West, Canadian RCMP, Swedish Navy, and for many US and European user groups. He is the author of UNIX System Security, published by Addison-Wesley in 1991, and System Administrator's Guide to System V (Prentice Hall, 1989). Farrow writes a column for ;login: and a network security column for Network magazine. Rik lives with his family in the high desert of northern Arizona and enjoys hiking and mountain biking when time permits.
Æleen Frisch (W5) has been a system administrator for over 20 years. She currently
looks after a pathologically heterogeneous network of UNIX and Windows
systems. She is the author of several books, including Essential
System Administration (now in its 3rd edition).
Peter Baer Galvin (S8, M3, T3) is the Chief Technologist for Corporate Technologies, Inc., a systems integrator and VAR, and was the Systems Manager for Brown University's Computer Science Department. He has written articles
for Byte and other magazines. He wrote the "Pete's Wicked World" and
"Pete's Super Systems" columns at SunWorld. He is currently
contributing editor for Sys Admin, where he manages the Solaris
Corner. Peter is co-author of the Operating Systems Concepts and Applied Operating Systems Concepts textbooks. As a consultant and trainer, Peter has taught tutorials on security and system administration and has given talks at many conferences and institutions on such topics as Web
services, performance tuning, and high availability.
Geoff Halprin (S13, T8) has spent over 25 years as a software developer, system administrator, consultant, and troubleshooter. He has written software from system management tools to mission-critical billing systems, has built and run networks for enterprises
of all sizes, and has been called upon to diagnose problems in every aspect of computing infrastructure and software. He has spent more years troubleshooting other
people's systems and programs than he cares to remember. Geoff was on the board
of the System Administrators Guild (SAGE) and is now a member of the
USENIX board of directors.
Joshua Jensen (T5) has worked for IBM and Cisco Systems and was Red Hat's
instructor, examiner, and RHCE. At Red Hat, he wrote and maintained large parts of the Red Hat
curriculum: Networking Services and Security, System Administration,
Apache and Secure Web Server Administration, and the Red Hat Certified
Engineer course and exam. Joshua has been working with Linux since
1996 and finds himself having come full circlehe is now employed by IBM while
working with Red Hat Linux onsite at Cisco Systems. In his spare time
he dabbles in cats, fish, boats, and frequent flyer miles.
Charlie Kaufman (M2) is Security Architect for the Common Language Runtime group at
Microsoft. He is editor of the new Internet Key Exchange
(IKEv2) protocol for the IPsec working group of IETF. He has contributed
to a number of IETF standards efforts, including chairing the Web
Transaction Security WG and serving as a member of the Internet
Architecture Board (IAB). He served on the National Academy of Sciences
expert panel that wrote the book Trust in Cyberspace. He was previously a
Distinguished Engineer at IBM, where he was Chief Security Architect for
Lotus Notes and Domino, and before that Network Security Architect for
Digital. He holds over 25 patents in the fields of computer security and
computer networking. He is coauthor of Network Security: Private
Communication in a Public World (Prentice Hall, 2002).
James Mauro (T2, W2) is a Senior Staff Engineer in the Performance and Availability
Engineering group at Sun Microsystems. Jim's
current projects are focused on quantifying and improving
enterprise platform availability, including minimizing recovery
times for data services and Solaris. Jim co-developed a framework
for system availability measurement and benchmarking and is
working on implementing this framework within Sun.
Ned McClain (S3), co-founder and CTO of Applied Trust Engineering, lectures
around the globe on applying cutting-edge technology in production computing
environments. Ned holds a B.S. in Computer Science from
Cornell University and is a contributing author of both
the UNIX Systems Administration Handbook and the Linux Administration
Richard McDougall (T2, W2) is a Sun Microsystems Distinguished Engineer who
specializes in operating systems technology and system performance. He
is based at the Menlo Park Performance and Availability Engineering
group, where he drives development of performance and behavior
enhancements to the Solaris operating system and Sun's hardware
architectures. He has led the development of resource management
principles, has contributed to the development of virtual memory and file
systems within the Solaris operating system, and has architected many
tools for analysis, monitoring, and capacity planning. He is the lead author
of Resource Management (Prentice Hall). He has written numerous
articles and papers on measurement, monitoring, and capacity planning
of Solaris systems and frequently speaks at industry and customer
technical conferences on the topics of system performance and resource
Radia Perlman (M2) is a Distinguished Engineer at Sun Microsystems. She is known
for her contributions to bridging (spanning tree algorithm) and routing (link
state routing), as well as security (sabotage-proof networks). She is the
author of Interconnections: Bridges, Routers, Switches, and Internetworking
Protocols and co-author of Network Security: Private Communication in a
Public World, two of the top ten networking reference books, according to
Network Magazine. She is one of the twenty-five people whose work has most influenced the networking industry, according to Data Communications Magazine. She has about fifty issued patents, an S.B. and S.M. in mathematics and a Ph.D. in computer science from MIT, and an honorary doctorate from KTH, the Royal Institute of Technology in Sweden.
Marcus Ranum (M8) Chief Security Officer at Tenable Security, Inc., and a world-renowned expert
on security system design and implementation.
He is recognized as the inventor of the proxy firewall and the
implementer of the first commercial firewall product. Since the
late 1980s, he has designed a number of groundbreaking security
products, including the DEC SEAL, the TIS firewall toolkit, the
Gauntlet firewall, and NFR's Network Flight Recorder intrusion
detection system. He has been involved in every level of operations
of a security product business, from developer, to founder and CEO
of NFR. Marcus has served as a consultant to many FORTUNE 500 firms
and national governments, as well as serving as a guest lecturer
and instructor at numerous high-tech conferences. In 2001, he was
awarded the TISC Clue award for service to the security community,
and he holds the ISSA lifetime achievement award.
David Rhoades (R1) is a principal consultant with Maven Security
Consulting, Inc. Since 1996, David has provided information protection services
for various FORTUNE 500 customers. His work has taken him across the US
and abroad to Europe and Asia, where he has lectured and consulted in
various areas of information security. David has a B.S. in computer
engineering from the Pennsylvania State University and has taught
for the SANS Institute, the MIS Training Institute, and ISACA.
John Sellens (T7, W4) has been involved in system and network administration
since 1986 and is the author of several related USENIX papers, a number of ;login: articles, and the SAGE Short Topics in System Administration booklet #7, System and Network Administration for Higher Reliability. He holds an M.Math. in computer science from the University of Waterloo and is a chartered accountant. He is the proprietor of SYONEX, a systems and networks consultancy. From 1999 to 2004, he was the General Manager for Certainty Solutions in Toronto. Prior to joining Certainty, John was the Director of Network Engineering at UUNET Canada and was a staff member in computing and information technology at the University of Waterloo for 11 years.
Theodore Ts'o (M5) has been a Linux kernel developer since almost the very
beginnings of Linux: he implemented POSIX job control in the
0.10 Linux kernel. He is the maintainer and author of the Linux COM
serial port driver and the Comtrol Rocketport driver, and he architected
and implemented Linux's tty layer. Outside of the kernel, he is
the maintainer of the e2fsck filesystem consistency checker. Ted
is currently employed by IBM Linux Technology Center.