2025 Aspen Cyber Summit

Top US cyber leaders will headline the 2025 Aspen Cyber Summit on November 18.

Help us celebrate a decade of dialogue and action. Register now to join us in Washington, DC.

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Jeff Greene

Senior Advisor, Cybersecurity Programs

Jeff Greene's headshot.

Jeff Greene is a Senior Advisor to the Aspen Institute’s Cybersecurity Programs. He served as the Executive Assistant Director for Cybersecurity at the Cybersecurity and Infrastructure Security Agency (CISA) and the Chief of Cyber Response and Policy on the National Security Council (NSC) during the Biden Administration. Before that he was Director of NIST’s Cybersecurity Center of Excellence and was an executive in a private sector cybersecurity company.

Member

  • Aspen Digital Team

Expertise

  • Cyber defense assistance
  • Cybersecurity
  • Preventing & disrupting ransomware

Read Insights by Jeff


The Limits of Risk-Informed Planning for State and Local Cyber Readiness

A shift to risk-informed planning may hinder cyber readiness as state and local governments assess their evolving digital threats.

  • Sezaneh Seymour
  • Vice President and Head of Regulatory Risk and Policy, Coalition
June 5, 2025