Before joining the firm, Matthew served as the Senior Counselor for Cybersecurity and Emerging Technology to the Secretary of Homeland Security. As a principal advisor to the Secretary and a member of the U.S. Department of Homeland Security’s leadership team, he served at the heart of U.S. government policymaking around AI and cybersecurity. He assisted in the development and drafting of key AI, cyber, and technology policies and regulations; advised on the deployment of AI to fulfill the department’s missions; and counseled on cyber-incident responses and investigations. Matthew also helped establish and served as the Executive Director of the Artificial Intelligence Safety and Security Board, a flagship public-private advisory committee focused on AI’s use in critical infrastructure and chaired by the Secretary and composed of industry, nonprofit, and government luminaries.