A new Dragos report warns that global OT cyber risk exposure could exceed US$300 billion. Indirect losses, often overlooked in traditional models, account for up to 70% of OT (operational technology)-related breaches, with worst-case scenarios placing the global financial risk at $329.5 billion. Produced by Marsh McLennan’s Cyber Risk Intelligence Center, the study examines the potential financial impact of OT cybersecurity controls and offers guidance for risk executives, (re)insurers, and security leaders.
In the Dragos-Marsh McLennan report titled ‘2025 OT Security Financial Risk Report,’ OT cyber risk is rising quickly and is projected to cost the global economy hundreds of billions of dollars each year. Much of this risk stems from indirect impacts on OT networks and operations, whether through disruptions to supporting systems or precautionary shutdowns. The complexity and interdependence of modern OT environments can create cascading risks, magnifying the scale and consequences of cyber incidents.
Region, industry, and revenue are key factors in determining OT cyber risk levels. North America and Europe record the highest OT event rates, and
