On-going Activities
The CERIAS
CERIAS is the Center for Education and Research in Information Assurance and Security. Spaf is the Executive Director Emeritus of this campus-wide Center, with a broadly-focused mission to explore issues related to protecting information and information resources.
ACM U.S. Public Policy Committee (now the USTPC)
Spaf is a past chair (2000–2014, 2015–2016) of what was then the ACM U.S. Public Policy Committee. This group helps advise legislators and regulators about the impact of policy on computing technology and vice versa. It changed in 2018 into the USTPC.
Government Testimony and Advice
Spaf has been called on to testify before Congress, advise the President, and provide advice to government agencies. The Government Activities page provides further details.
Computers & Security
From 2010–2025, Spaf was the Editor-in-Chief of the journal Computers & Security — the field's oldest journal. He is now Editor Emeritus (Consulting Editor).
Sandia DAHCS
Spaf is the chair of the external advisory board for Sandia National Laboratories' Mission Campaign for Digital Assurance for High Consequence Systems from 2024–2031.
Notable Past Activities
The PITAC
Spaf was a member of the President's Information Technology Advisory Committee (PITAC) for 2003–2005.
CRA Board of Directors
Spaf was one of ACM's representatives on the Computing Research Association board of directors, from 1998–2007 and 2022–2025.
Senior Advisor at NSF
Spaf spent the 2003–2004 academic year at the National Science Foundation as a senior advisor to the Assistant Director of CISE, Dr. Peter Freeman. In this role he assisted in formulating general plans for programs such as the Cyber Trust solicitation, and increasing awareness of the interdisciplinary aspects of cyber security, privacy, and cyber forensics.
The Beta Indiana Chapter of Upsilon Pi Epsilon
Upsilon Pi Epsilon (UPE) is the international honor society for the computing sciences. Spaf was a founder and long-time faculty advisor of the Purdue University Chapter (Beta Chapter of Indiana).
The COAST Laboratory
The COAST Laboratory existed from 1992–1998 in the CS Department at Purdue as a focus for information security research. It has been subsumed by CERIAS.
US Air Force Scientific Advisory Board
Spaf was a member of the Air Force Scientific Advisory Board in 1999–2003. This group provides expert scientific advice to the Chief of Staff of the Air Force regarding current and future technology issues.
The Spyder Project
A research project concerned with research into new methods of debugging software. Spaf's first three Ph.D. students worked on this project.
The Purdue Computer Emergency Response Team
Spaf was a founding member of this group whose mission was to coordinate responses to computer security problems at Purdue. He was also Purdue's Chief Information Security Officer (CISO) for several years. (PCERT has been defunct for many years.)
Poly2 Project
This project was under CERIAS, attempting to build a server based on classic security principles that would make it highly resistant to attack and failure.
The MESSIAHS Project
Research into scheduling mechanisms for autonomous, heterogeneous, distributed computing systems.
DSSG-V
Spaf was a member of DSSG-V, the fifth incarnation of the IDA/DARPA Defense Science Study Group.
Spaf's involvement in guiding the Usenet
For 11 years, Spaf updated the newusers postings and posted them to the net. He was the person who "created" the Usenet backbone concept (and thus the Usenet Cabal), helped design the current naming structure of Usenet, answered thousands of newbie questions, and many other activities. In 1993, Spaf retired from the task.
IFIP Working Group 11.4: Network Security
Spaf is a past chair of this IFIP working group. IFIP TC11.4 is devoted to research on network security.
WIPO/DMCA Opposition
Spaf coordinated efforts to educate representatives in Congress about the flaws in the Digital Millennium Copyright Act. Unfortunately, it was passed without fixing all the problems. The ACM USTPC continues to address these problems.
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