This report presents a comprehensive framework for enhancing cyber resilience in the maritime sector, which is undergoing significant digital transformation. It outlines the convergence of Information Technology (IT) and Operational Technology (OT) and the associated risks posed by sophisticated cyber threats. The report details the financial implications of cyber incidents, citing the 2017 NotPetya attack as a pivotal moment for the industry, with costs reaching millions per day due to operational paralysis. It emphasizes the importance of a strategic framework that includes resilient architecture, defensible supply chains, and a culture of active defense. The document also discusses the evolving regulatory landscape, highlighting new mandates from the European Union and the International Association of Classification Societies that impose strict security measures and accountability on senior management. The report serves as a guide for port leadership to navigate the complexities of cyber threats while building a competitive advantage through enhanced operational reliability.