JR
CISSP
CISM
MBA
M.S. Cybersecurity
CMMC Registered Practitioner

James "Byff" Riffenburg

President & CEO, Rockwall Cyber LLC

Retired U.S. Marine Corps Master Sergeant. Twenty-plus years working in cybersecurity across defense, federal, and commercial environments — as an implementer, assessor, advisor, and executive.

That breadth matters. I've built security programs, validated them, and had to defend them under real scrutiny. I understand what holds up and what doesn't — because I've been on both sides of the table.

When you engage Rockwall Cyber, you work directly with me. Not a project manager. Not a team of analysts you've never met. Me — on your problem, from day one.

Rockwall Cyber didn't start because we wanted to launch another consulting firm. It started because we kept seeing the same problem.

After more than two decades across defense, federal, and commercial environments, we were consistently brought in when things were already going sideways. Compliance programs that looked solid on paper but didn't actually reduce risk. Security tools that were expensive but poorly implemented. Leadership teams who believed they were ready — until an assessment, audit, or real-world event proved otherwise.

That pattern became especially clear with the rise of CMMC. We saw capable defense contractors — companies doing critical work — struggling not because they lacked commitment, but because they were navigating a system filled with complexity, conflicting guidance, and check-the-box solutions that didn't translate into real readiness.

At the same time, many organizations lacked something even more fundamental: experienced, executive-level cybersecurity leadership. Not more tools. Not more policies. Clear, accountable guidance at the level where business decisions are actually made.

"At some point, we stopped asking how to fix this one client — and started asking why this keeps happening in the first place."

Rockwall Cyber was built as the answer to that question. A firm where deep experience replaces unnecessary complexity. Where CMMC and compliance are approached as operational readiness — not paperwork. Where vCISO advisory brings clarity to leadership, not confusion to the organization.

We don't aim to be the biggest firm. We aim to be the one you trust when your CMMC readiness actually matters, when your risk posture needs to be clearly understood, and when the decisions in front of you carry real consequences.

Service-Disabled Veteran-Owned
SDVOSB — Federal Set-Aside Eligible
Veteran-Owned Business
Registered, State of Texas

Veteran-Owned & Federal-Ready

Rockwall Cyber is a Service-Disabled Veteran-Owned Small Business (SDVOSB), registered through VetCert/VetBiz and pursuing state certification through VetHUB Texas. We are eligible for federal and state set-aside contracting vehicles.

The same discipline, accountability, and mission focus that defined 20+ years of military service shapes how we operate as a firm.

Credentials & Background

Certifications
  • CISSP — Certified Information Systems Security Professional
  • CISM — Certified Information Security Manager
  • CMMC Registered Practitioner (in progress)
Education
  • M.S. Cybersecurity
  • MBA
Background
  • Retired U.S. Marine Corps Master Sergeant
  • 20+ years cybersecurity across defense, federal, and commercial sectors
  • Experience as implementer, assessor, and executive advisor

Ready to work with someone who's been there?

Schedule a free 30-minute consultation. No pitch. No pressure. Just clear answers.

Schedule a Free Consultation