D1 Cyber is led by Brandon Harms — a hands-on security professional with 20+ years protecting networks and companies across defense, telecom, and Silicon Valley. He started D1 Cyber to give Tampa Bay businesses the same caliber of documented security the big enterprises get, at a fixed price.
Began as a network engineer securing federal defense networks, where accountability and uptime are non-negotiable — and documentation is the price of admission.
Years engineering and securing telecom systems, where a single misconfiguration can ripple across thousands of customers.
Helped build and sell security solutions at Silicon Valley companies — watching how attackers, and the defenses against them, evolved in real time.
Led security for a managed provider serving hundreds of small and mid-market businesses — the same companies now facing tougher cyber insurance applications.
Certified Information Systems Security Professional.
GIAC Penetration Tester.
Certified Ethical Hacker.
Business leadership on top of two decades of hands-on engineering.
In progress. Applied research into security leadership and risk.
GIAC Advisory Board member.
Serving Greater Tampa Bay — same time zone, same community.
No offshore teams, no call centers. The person who wrote your answers is the person you talk to.
We answer — and we speak underwriter, so the follow-up questions get resolved fast.
A free 20-minute review shows you exactly which questions you can't answer "yes" to today.