Greenberg Traurig’s National Security Group serves as trusted advisors to corporations, foundations, individuals, and government entities on highly sensitive issues that require both proactive and reactive strategies to navigate the ever-changing national security landscape and the often opaque processes involved with the public-private, business-government interface.

As national security scrutiny intensifies globally for all industry sectors, particularly for aerospace, critical infrastructure, defense, energy, manufacturing, and technology, clients rely on our experience helping to navigate negotiations, regulatory requirements, complex and highly sensitive transactions, and quarterbacking investigations and litigation.

This multidisciplinary group brings together experienced GT lawyers in core disciplines including government procurement, M&A, export controls and sanctions, cybersecurity, and government relations. We help navigate high profile issues before the Committee on Foreign Investment in the United States (CFIUS), along with myriad other U.S. and international authorities, including Departments of Defense, State, Homeland Security, and Justice. We work with clients at every stage, from Fortune 100 companies to innovative start-ups and global investors, providing quick, practical legal strategies for cross-border matters and national security reviews.

Our Services

Crisis Response, Litigation & Investigations

• Representation in False Claims Act matters, government audits, and bid protests
• Strategic support in regulatory investigations, enforcement actions, and litigation
• Providing insight into the congressional investigations and inquiries, including managing responses to requests for documents, subpoenas, and preparing for testimony.

National Security Transactional Support

• CFIUS, FOCI, and global foreign direct investment (FDI) reviews
• Guidance on mergers, acquisitions, divestitures, and joint ventures involving government contractors, including contract novations, security clearance transfers, and compliance with the Federal Acquisition Regulation (FAR) and Defense FAR Supplement (DFARS)
• Regulatory due diligence for acquisitions, divestitures, and joint ventures

Export Controls, Sanctions & Compliance

• Compliance with the International Traffic in Arms Regulations (ITAR), Export Administration Regulations (EAR), and related sanctions programs
• Advice on technology transfers, supply chains, and classified and controlled contracts

Cybersecurity & Supply Chain Security

• Guidance on NIST, DOD, and federal cybersecurity requirements in transactional and operational contexts
• Incident response planning and data protection compliance
• Compliance with government programs including Cybersecurity Maturity Model Certification (CMMC)

Government Relations & Advocacy

• Advocacy before CFIUS, DOD, GSA, DHS, and other agencies
• Engagement with Congress and regulators on policy, compliance and national security issues