I couldn't have written this book without the help of a huge number of people who were willing to take their time and share their expertise with me. I'd first like to thank my friend and mentor, John Kindervag, for his help throughout my career as I took my organization through our Zero Trust journey and as I developed this story.

I also owe a debt of gratitude to my publisher, Jim Minatel, who not only believed in the project, but that I could actually somehow pull it off. And I'd like to thank the team at Wiley and Sons, particularly John Sleeva, Pete Gaughan, and Melissa Burlock for their invaluable contributions to make this book what it is.

Cybersecurity is a team sport. We can't do what we do without sharing our experiences with one another. When I picked up my phone and began asking for help, the community came together and answered the call. I'd like to personally thank Zach Vinduska for being right there with me all the way through the creation of the book. I'd also like to thank Adam Shostack for his insights and helping make all of the details come to life.

I'd also like to give a huge shout out to my friends and colleagues Jason Fruge, Helen Patton, Eve Maler, Russ Kirby, Rob LaMagna-Reiter, Exodus Almasude, Chase Cunningham, Josh Danielson, Jordan Mauriello, Malcolm Harkins, and Steve King. I consider myself incredibly lucky to know all of you.

And, finally, I'd like to thank my wife Amanda and my daughter Story for their support, their inspiration, and their understanding while I pursued my dream of being a writer.