Geoff Brown joined Arete as a Senior Vice President in November 2023 to develop, tailor, and lead the company’s strategy and capabilities for the cybersecurity missions of the public sector.  

Prior to Arete, Geoff was with Recorded Future, and led efforts to deliver the company’s premiere intelligence cloud offering to global governments.

Between 2016 and 2022, Geoff was Chief Information Security Officer for the City of New York, a position focused on cybersecurity and aggregate information risk across all 100+ NYC departments and agencies. In July 2017, Mayor de Blasio established New York City Cyber Command, an agency founded and led by Geoff, reporting to City Hall, and charged with consolidating and leading the City’s enterprise cybersecurity strategy, inclusive of building NYC Cyber Command itself, and through this new agency setting Citywide cybersecurity policies; directing response to cyber incidents; rationalizing the City’s cybersecurity spend and cyber defense technology footprint, and advising City Hall, agencies and departments on the City’s overall cyber defense. Geoff also created the City’s first public-facing cybersecurity initiative, called NYC Secure, wherein the City brought enterprise cybersecurity capabilities to everyday New Yorkers in a privacy respecting way.

Geoff is a visiting professor with the Middlebury Institute of International Studies Nonproliferation and Terrorism Studies department, an advisor for New York University’s Cybersecurity and Risk Strategy program, and has previous experience in financial services and with the U.S. Federal Government, including with the 9/11 Commission.