AB, Columbia University; JD Georgetown University Law Center. 2006-08, Director, Emergency Preparedness and Response Policy, US Department of Homeland Security. 2008-12, Deputy Assistant Secretary for Policy (Strategic Plans). 2012-15, Assistant Secretary for Strategy, Planning, Analysis & Risk; represented Department of Homeland Security on the Committee on Foreign Investment in the United States (CFIUS). Adjunct Professor, Georgetown University Law Center; Of Counsel and Co-Chair, Blockchain and Digital Currency Practice, Steptoe & Johnson; Principal, ADC/Strategy.Works. Attorney and consultant, focused on cybersecurity, cryptocurrency and blockchain technology, and emerging technology risks. Adviser to blockchain companies focused on cryptocurrency transaction tracing, digital identity, enterprise blockchain applications, and IoT security. Co-Chair, Global Future Council on Cybersecurity, World Economic Forum; Counsel, Blockchain Alliance; Fellow, Georgetown's Center for National Security and the Law.