Assuming perfect prevention is not a strategy.
This principle focuses on blast-radius reduction, a concept CISOs understand well.
Board-Level Risk Controls
• Segmentation and micro-segmentation
• Separation of duties
• Elimination of flat networks
• Restrictions on lateral movement
Executive Insight
Resilience is defined by how much damage an attacker can cause after initial access.
Final Thought: Resilience Is About Containment, Not Confidence
No CISO should assume their OT environment is uncompromised—only that compromise has not yet been detected. Segmentation and blast-radius reduction acknowledge this reality without accepting defeat.
Boards rarely ask whether a breach is possible; they ask how bad it will be. CISOs who design networks to fail safely provide credible answers when those questions come.
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