Security leadership that works for the mid-market.
Stonebridge Cyber gives growing and regulated organizations the caliber of security leadership and operations usually reserved for the Fortune 100 — vendor-neutral, outcomes-focused, and built to be accountable.
Make elite security operations accessible.
Most organizations can't hire a full security executive team or run a 24/7 SOC — yet they face the same threats and regulators as those who can. We close that gap with fractional leadership, managed operations, and a platform that puts AI-driven reasoning behind every decision, so strong security no longer depends on the size of your budget.
Founder-led, operator-built
Douglas Carter
Founder & CEO
Douglas founded Stonebridge Cyber on nearly four decades of executive security leadership across regulated and enterprise environments. He built the firm around a pattern he saw everywhere: capable teams held back by disconnected tools, manual process, and security advice tangled up with vendor sales. Stonebridge is the answer — independent, accountable leadership and operations, backed by a platform that makes its reasoning transparent.
Independent. Accountable. Outcome-driven.
The principles that shape every engagement — from a boardroom briefing to a production control.
Vendor-neutral by principle
We do not resell tools. Every recommendation is driven by your risk and outcomes — and you keep every policy, roadmap, and piece of evidence we produce.
Outcomes, not hours
We measure success in risk reduced, incidents avoided, and compliance kept — not activity. Engagements are scoped to the result you need.
Veteran-owned discipline
As a Service-Disabled Veteran-Owned Small Business, we bring mission focus, accountability, and a bias for getting it done to every engagement.
Board-to-engineer fluency
We speak to the boardroom and the SOC with equal fluency — translating security posture into business decisions, and strategy into working controls.
Let's raise your security bar.
Whether you need fractional leadership, managed operations, or a design-partner seat on the HELM platform, we'll meet you where you are.