From the Deck to the Digital Battlefield

20+ years of leadership across the U.S. Navy, federal government, and Fortune 500 enterprises — translating battlefield discipline into cybersecurity strategy that wins.

20+

Years of leadership experience

Fortune 500

Enterprises & governments served

2

Published cybersecurity books

Navy CPO

Retired Chief Petty Officer

Naval Service — Ships Served

Founder & President

Certifications

About Dewayne Hart

Dewayne Hart is a Navy veteran, cybersecurity strategist, author, and speaker with over 20 years of leadership experience across the military, government, and Fortune 500 enterprises. A retired Chief Petty Officer, he served aboard four naval vessels, honing leadership under high-pressure conditions and mentoring sailors in resilience and strategic thinking.

Transitioning to cybersecurity, Dewayne has led initiatives in security engineering, vulnerability management, and consulting — helping organizations reduce risk and strengthen workforce readiness. As Founder and President of SEMAIS, he bridges operational excellence with digital defense, emphasizing people, culture, and leadership as the true core of cybersecurity.

He writes to educate, empower, and inspire — emphasizing that cybersecurity impacts everyone, from executives to students and families. Through his Chief of Cybersecurity podcast, YouTube channel, and Cyber Talk newsletter, Dewayne translates complex security concepts into actionable strategies that shape a new generation of cyber defenders.

Organizations Served

Dept. of Veterans Affairs

Security Engineering & Risk

PwC

Cybersecurity Consulting

Kaiser Permanente

Vulnerability Management

Wells Fargo

Dewayne Hart

Navy Veteran — Retired Chief Petty Officer

Mission: Equip leaders and communities to think strategically, act decisively, and build resilient organizations in the digital age.

Combining military precision with cybersecurity expertise, I help organizations and leaders navigate high-stakes digital environments, fostering resilience, strategic thinking, and a culture where security and innovation thrive together.

— Dewayne Hart, Founder & President, SEMAIS

Authored Books

Book 01

The Cybersecurity Mindset: A Virtual and Transformational Thinking Mode

A practical roadmap helping readers understand evolving threats, anticipate challenges, and make proactive decisions. Guides leaders on risk, resilience, and transformation — with frameworks accessible to both technical and non-technical professionals.

Book 02 — Latest Release

Cybersecurity Leadership: How to Develop a Successful Mentality and Win

A practical playbook for executives and aspiring leaders — equipping them with the mindset, strategies, and frameworks to lead in the digital age and turn cybersecurity into a strategic business advantage.

Signature Philosophy

Cybersecurity is not just about defense — it is about resilience, readiness, and leadership at every level of an organization.

Strong programs are built on strong leaders. Technology follows vision, not the other way around.

The right mindset transforms cybersecurity from a technical function into a strategic advantage for the entire enterprise.

Selected Speaking Engagements

From boardrooms to cyber frontlines, Dewayne inspires leaders worldwide.

GDS Group — Security North America Summit

Keeping Business at the Forefront of Cybersecurity

GovTech Con

How to Pivot from a Technical Expert to a Strategic Leader

Incyber Forum

AI and Modern Warfare

Techno Security & Digital Forensics

Building 360° of Cyber Visibility

GDS Group — Security North America Summit

Cybersecurity Leadership Starts Long Before the Attack

National Cybersecurity Summit

Cracking the Code: The Dual Relationship Between AI & Cybersecurity

Career Timeline

2005 – 2015

U.S. Navy

2015 – 2020

Cybersecurity

2018 – Present

Thought Leadership

2024

Book Announcement

December 2025

Book Launch