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
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.
Read the full storyAbout 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.
Learn more about DJWhy 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.
How We Work
The 77 Meridian Approach
Assess
Evaluate your legal and regulatory landscape
Advise
Develop strategy based on deep government insight
Embed
Integrate as part of your leadership team
Protect
Navigate risks before they become crises
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.