From
http://www.searchengineblog.com/rich-skrenta-interview.htm :
"My background is in engineering. I started my career working on Unix operating system internals, first at Commodore-Amiga (they actually had a version of Unix which could run on the Amiga), and then at Unix System Labs. In 1995 I went to work for Sun Microsystems on network security and encryption products."
