Sean Cairncross
Sean Cairncross is an American lawyer and political operative who has served as the United States National Cyber Director since August 2025, heading the Office of the National Cyber Director. In this role, he acts as President Trump's principal advisor on national cybersecurity policy and strategy, focusing on coordinating with allies to counter nation-state cyber threats and streamlining cybersecurity regulations in partnership with the private sector. He previously served as CEO of the Millennium Challenge Corporation and as Chief Operating Officer of the Republican National Committee.
“National cyber director Sean Cairncross... also participated in technical discussions.”
Source→“Cairncross believes that Treasury has become too involved, while Bessent and allies in the White House believe Cairncross has not met the moment with the necessary urgency.”
Source→AI-extracted from podcast / newsletter / paper summaries. May contain errors.