A Look at Federal Zero Trust Transformation

Tue, 06/24/2025

Explore how civilian and defense leaders are putting zero trust principles into practice across government networks.

Learn more about:

DISA’s Thunderdome initiative and how it is helping scale zero trust across the military.
What’s going on with CISA’s Common Vulnerabilities and Exposures (CVE) program.
How federal mandates are impacting zero trust partnerships.

Download the Deep Dive PDF

Featuring

Christopher Barnhurst Deputy Director, DISA
Christopher Barnhurst
- Deputy Director
- DISA
Christopher Barnhurst is the Deputy Director at DISA.
Patrick Perry Field CTO, Zscaler Public Sector
Patrick Perry
- Field CTO
- Zscaler Public Sector
As a Field CTO, Patrick Perry is responsible for assisting global public sector organizations, of all types and sizes, to align the transformational value proposition of Zero Trust to their organizational needs and information technology landscape.

Before rejoining Zscaler, Patrick served as the U.S. Army CZTO/CXO charged with driving transformational change across the Army in order to operationalize the Zero Trust concepts, while continuously balancing security and operations to deliver the best possible experience to the warfighters.

Previously, Patrick served in the Army, where he retired as a Signal Corps Chief Warrant Officer Four after nearly 22 years of service. Working at all echelons with over 2/3rds of his career in Special Operations, he led technology advancements from small team to theater capabilities with over 9 deployments to Combat Theaters.

Patrick holds degrees from University of Oklahoma and University of Maryland University College, as well as industry certifications including 2 x CISCO Certified Internet Expert (CCIE) and the CISSP. He is married to Kristy Perry, a career Army Signal Officer currently serving on active duty, and they have five children.
Sandy Radesky Senior Cyber Security Executive, CISA
Sandy Radesky
- Senior Cyber Security Executive
- CISA
Sandy Radesky is the Senior Cyber Security Executive at the CISA.
David Voelker Zero Trust Architecture Lead, Department of the Navy
David Voelker
- Zero Trust Architecture Lead
- Department of the Navy
David Voelker is the Zero Trust Implementation Lead at the Department of the Navy.