This Fortinet white paper explains how advanced threats are exploiting vulnerabilities in operational technology (OT) environments due to IT/OT convergence, outdated systems, and lack of patching. OT systems face growing attacks from ransomware and nation-state actors, with 61% of intrusions impacting OT. As legacy equipment ages and cybersecurity gaps widen, attackers target industries like manufacturing and critical infrastructure. The paper urges a shift from fragmented defenses to purpose-built, integrated OT security that includes real-time detection and response—acknowledging that breaches are inevitable, not hypothetical.

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