Mark Stamp can neither confirm nor deny that he spent 7 years as a National Security Agency cryptanalyst. However, he can confirm that he spent 2 years as Chief Cryptologic Scientist at a small Silicon Valley startup, where he helped develop a digital rights management (DRM) system. For the past 4 years he has been Assistant Professor in the Department of Computer Science at San Jose State University, where he teaches courses in information security, networking, and cryptography. He recently published a textbook, Information Security: Principles and Practice (Wiley Interscience, 2006) and he has just completed a second textbook, Applied Cryptanalysis.