Peter J. Denning is vice provost for continuing professional education at George Mason University. Denning was president of the Association for Computing (ACM) and is now chair of the ACM Publications Board. His two most recent books are Computers Under Attack and Beyond Calculation: The Next 50 Years of Computing.
Dorothy E. Denning is Professor of Computer Science at Georgetown University. She is the author of a classic book in the field, Cryptography and Data Security, a coeditor (with Peter J. Denning) of a more recent work, Internet Besieged: Countering Cyberspace Scofflaws, and the author of 100 papers on computer security. Dr. Denning has shared her special expertise on encryption in testimony before the U.S. Congress.