A security architect is designing a solution for a manufacturing plant that uses industrial control systems (ICS). Which security architecture principle is MOST critical for these environments?

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B. Isolating ICS networks from corporate IT networks using an air gap or strict firewall segmentation. Industrial Control Systems (ICS) and SCADA environments have unique security requirements because they run specialized, often legacy software that cannot easily be patched or updated. The most critical principle is network isolation — using an air gap or strict firewall segmentation to separate OT (operational technology) networks from corporate IT networks — to prevent cyber threats from reaching critical infrastructure.

A security architect is designing a solution for a manufacturing plant that uses industrial control systems (ICS). Which security architecture principle is MOST critical for these environments?

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