Michael Gregg is a Field CISO/Strategist for Palo Alto Networks. Prior to joining Palo Alto Networks, Mr. Gregg held CISO roles in public, private, and as an expat cyber leader. As the former CISO of North Dakota, he used a “whole of State” approach to expand coverage from 20,000 to 200,000 endpoints, created the nation’s first Joint State SOC, and expanded services to tribal nations. As an expat CISO, Mr. Gregg led large-scale change through mergers and acquisitions that grew global operations to more than 45 worldwide locations. He established a standardized cyber operating model globally and matured the security organization using an outsourced model from the ground up.

Mr. Gregg has authored/co-authored more than 24 books; some include: Inside Network Security Assessment, SAMS; Hack the Stack, Syngress; and Security Administrator Street Smarts, Sybex. He has testified at the state level and the United States Capitol. He was invited to speak at The White House about cyber security. He has served as an expert commentator for network broadcast outlets and print publications. Most recently, in October of 2026, he provided testimony to the Arkansas State Joint House and Senate Information Technology Committee, he was voted Visionary CISO of 2024, Top 25 Public Sector Doers, Drivers, and Dreamers of 2024, and was awarded Top 100 CISOs in the United States for 2023. Michael enjoys giving back to the community and serves as President of ISACA Houston and is an Advisory Board Member for multiple universities.