This book is a collection of 16 essays from different writers. Essays were fairly short and well written. However, I found only about one third of the essays interesting. Especially Mudge's "Psychological Security Traps" and Curphey's "Tomorrow's Security Cogs and Levers" were great. Other topics included for example security metrics, honeyclients, evolution of PGP web of trust and software security. I'm bit disappointed, because so many of essays were either trivial or non-interesting to me, but since the overall quality of texts were good, I'll recommend the book anyway.