Establishing a trusted global framework for cyber threat intelligence (CTI) sharing is essential to collective cyber resilience, deterrence, and defense. The lack of a global framework for CTI sharing hampers timely prevention of, and response to, cyberattacks. Governments, allies, and the private sector must collaborate across borders to establish secure, standardized, and legally compliant mechanisms for CTI exchange. Policy disparities and resistance to change remain key obstacles. This article examines essential elements of effective CTI sharing—data security with validation, anonymization, and authorization—and proposes trust-based practices that can be implemented within existing legal frameworks. As cyber threats grow in sophistication and complexity, routine, responsible CTI sharing must become a global norm. International and U.S. law permit such cooperation, enabling nations and organizations to enhance resilience, protect critical infrastructure, and strengthen collective defense. Transparent, trusted sharing not only improves cyber readiness but also projects power by enabling allies to deter adversaries and deny them the element of surprise.
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