Global Challenges. Clear Direction.

National Security Counsel for Technology Companies

Embedded legal and strategic counsel for companies operating at the intersection of technology, AI, and national security. Led directly by DJ Rosenthal, former senior official at the National Security Council and the Department of Justice.

Washington, D.C. | Former senior positions: National Security Council | DOJ National Security Division | U.S. Intelligence Community

What We Do

Counsel That Operates at Your Level

77 Meridian advises technology and AI companies navigating sensitive regulatory, legal, and national security terrain. Four core practice areas, each led directly by DJ Rosenthal.

Fractional General Counsel

Embedded legal and strategic partnership for technology companies that need senior counsel without building an in-house legal department. Corporate governance, commercial contracts, regulatory compliance, and day-to-day legal support: from someone who understands the national security environment your company operates in.

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Our Origins

77 Meridian was founded on a simple observation: the most consequential legal and regulatory challenges facing technology companies today sit at the intersection of national security and commercial innovation. Most law firms treat that intersection as a niche specialty. DJ Rosenthal has spent his entire career, from the White House Situation Room to the Department of Justice to global corporate advisory, operating at its center.

Founded in 2025, built on 20+ years of senior national security experience in government and the private sector.

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About the Founder

DJ Rosenthal brings more than two decades of national security experience across the highest levels of government and the private sector. Former senior positions at the National Security Council, the DOJ National Security Division, and the U.S. Intelligence Community. He founded and led the CFIUS advisory practice at Kroll, the global corporate risk firm, and previously practiced at WilmerHale.

Every engagement at 77 Meridian is led personally by DJ, not delegated to associates.

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Why 77 Meridian

What Sets Us Apart

Core Values

Truly Independent

No institutional conflicts, no legacy client obligations, no competing practice areas. Advice driven by the client's interest alone.

Discreet

Confidentiality is the default. No unnecessary exposure, no loose talk, no public posturing.

Bespoke

Every engagement is scoped to the client. No boilerplate, no one-size packages, no recycled playbooks.

Expertise

Experience at the Right Levels

Senior government positions where national security policy is made and enforced.

Direct Engagement

DJ Rosenthal leads every engagement personally. No handoff to junior associates.

Consistent, Dependable Quality

The same senior counsel on every call, every brief, every board meeting.

Operational

Nimble

No committee approvals. No bureaucratic delay. Decisions made at the speed your business requires.

Efficient

Fixed retainer, not billable hours. No surprises, no padding, no incentive to prolong matters.

Tailored Expertise

An extended team of former FBI agents, Fortune 100 CISOs, and crisis professionals, assembled to match your needs.

What Clients Say

DJ Rosenthal is the rare attorney who combines genuine national security expertise with the thoroughness and trustworthiness you need when the stakes are high. He understands the landscape our business operates in, not just the legal dimensions, but the policy and threat environment that shapes every decision we make. Having DJ in our corner gives us confidence that we're getting the right advice, not just a legal memo.

Bobby McKenzie

CEO, 10a Labs

AI and National Security

77 Meridian has become an indispensable part of how we operate. DJ handles our national security legal and policy questions with real depth and precision. But what sets him apart is that he's also a trusted strategic advisor and a steady hand when it matters most. He's helped us navigate everything from complex regulatory questions to critical business decisions. He's not just our lawyer; he's one of the most valuable advisors we have.

John Maslin

CEO, Vulcan Elements

National Security Counsel & Strategic Advisory

I've known DJ Rosenthal for years as one of Washington's most serious national security minds. When we built the CFIUS and national security practice at Kroll together, I saw firsthand how deeply he thinks about these issues, from the law to policy, from geopolitics to the practical realities facing clients. He brings that same rare combination of rigor and judgment to everything he does at 77 Meridian. Companies navigating this space are fortunate to have him.

Dan Karson

Former Chairman, Kroll

Colleague & Former Chairman, Kroll

How We Work

The 77 Meridian Approach

1

Assess

Evaluate your legal and regulatory landscape

2

Advise

Develop strategy based on deep government insight

3

Embed

Integrate as part of your leadership team

4

Protect

Navigate risks before they become crises

5

Evolve

Adapt as the regulatory environment shifts

Due Diligence & Investigations

Former federal law enforcement professionals conducting background investigations, compliance reviews, and risk assessments.

Cyber Risk Assessments & Security

Former Fortune 100 CISOs leading threat analysis, vulnerability assessments, and security program design.

Advanced Threat Analysis

Intelligence community veterans assessing foreign threats, insider risks, and sensitive data exposure.

Strategic & Crisis Communications

Media strategy, crisis response, and public affairs counsel for companies under regulatory or public scrutiny.

Ready to Talk?

Whether you are navigating a CFIUS review, responding to a government inquiry, or building a regulatory strategy from the ground up, start with a conversation.

20+ years of senior national security experience. Every engagement led directly by DJ Rosenthal.

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