Public Sector CTO & Zero Trust Leader

Gary Barlet

Public Sector CTO

Gary Barlet is the Public Sector Chief Technology Officer at Illumio, where he is responsible for working with government agencies, contractors and the broader ecosystem to build in Zero Trust Segmentation as a strategic component of the government Zero Trust architecture. Previously, Gary served as the Chief Information Officer (CIO) for the Office of the Inspector General, United States Postal Service. He has held key positions on several CIO staffs, including the Chief of Ground Networks for the Air Force CIO and Chief of Networks for the Air National Guard CIO, where he was responsible for information technology policy and providing technical expertise to senior leadership. He is a retired Lieutenant Colonel from the United States Air Force, where he served as a Cyberspace Operations Officer for 20 years.

Authored content

Weekly Briefing

Awareness of Zero Trust Shifting from ‘What Is It?’ to ‘How Do I Achieve It?’

Gary Barlet shares his top takeaways on segmentation, observability, and the future of cybersecurity.

Weekly Briefing

Cyber Insurance: A Crutch That’s Making Cybersecurity Worse

Learn why businesses need to rely on Zero Trust rather than cyber insurance as premiums rise and payouts fuel more attacks.

Weekly Briefing

Is Your Data Privacy Strategy a House of Cards?

Discover why Data Privacy Day 2025 is a wake-up call for organizations still using outdated security strategies.

Weekly Briefing

Zero Trust Makes Cybersecurity Everyone's Responsibility

Learn why Zero Trust is making security a shared responsibility held by everyone at an organization.

Ready to learn more about Zero Trust Segmentation?

Learn more