1980 – Graduated from the University of Arizona and received his Ph. D. in Planetary Science.
1989 – Wrote The Cuckoo’s Egg: Tracking a Spy Through the Maze of Computer Espionage, the page-turning true story of how he caught a ring of hackers who stole secrets from military computer systems and sold them to the KGB.
1995 – Author of the book Silicon Snake Oil: Second Thoughts on the Information Highway.
1999 – Wrote High Tech Heretic: Reflections of a Computer Contrarian.