ACM Talk: The Downsides of Computing Peter G. Neumann, Principal Scientist Computer Science Lab, SRI International Neumann@CSL.sri.com http://www.csl.sri.com/neumann/ 2 December 1999, 5pm, CLB 0111 This talk reflects on my many years of collecting incidents in which people and computers have not behaved as expected. It considers what has happened and why, and what needs to be done in the future to avoid even more serious risks than we have experienced thus far. The subject matter is intentionally very broad, because the lessons that need to be learned are comprehensive -- encompassing (for example) security, reliability, software engineering practice, human interfaces, and, above all, people. Peter G. Neumann is a Principal Scientist in the Computer Science Lab at SRI International in Menlo Park, where he has been since 1971. He has worked on system security, safety, reliability, and survivability for many years. He is the author of the Addison-Wesley book *Computer-Related Risks*, Moderator of the widely read Risks Forum (comp.risks), Chairman of the ACM Committee on Computers and Public Policy, and Fellow of the ACM, IEEE, and AAAS. He is currently on the U.S. General Accounting Office (Congressional watchdog agency) Executive Council on Information Management and Technology. His Website contains new material supplementing the book, RISKS information, the Illustrative Risks compendium index, papers, a partial bibliography, Senate and House testimonies, materials related to a course on information system survivability he is teaching at the University of Maryland in the Fall 1999 semester, and other background.