We would like to thank all the people who work in the information security industry who are driven by their passion, dedication, and a true sense of doing right. The best security people are the ones who are driven toward an ethical outcome.

In this seventh edition, we would also like to thank the following:

•  Ronald Dodge, who brought the two authors of this book together and, in doing so, set off a sequence of events that he couldn’t have possibly anticipated.

•  David Miller, whose work ethic, loyalty, and friendship have continuously inspired us.

•  All the teammates from Logical Security.

•  The men and women of our armed forces, who selflessly defend our way of life.

•  Kathy Conlon, who, more than anyone else, set the conditions that led to seven editions of this book.

•  David Harris.

•  Emma Fernandez.

Most especially, we thank you, our readers, for standing on the frontlines of our digital conflicts and for devoting your professional lives to keeping all of us safe in cyberspace.