Heading the company with perhaps the most recognized acronym in the information security field and following in the footsteps of lightning-rod figure Phil Zimmerman must have both its charms and its challenges. PGP CEO Phil Dunkelberger, however, ranges far and wide in his reflections on how data — and keeping it safe — affects our lives and our thinking. I had the good fortune to talk with Dunkelberger on a summer morning as we both worked from our home offices.