The critical technique of Network Segmentation mitigates risk for Critical Infrastructure and Operational Technology networks, as demonstrated by CISA’s endorsement of segmentation. Many cyber attacks have turned from simple user compromise to devastating shutdowns and ransomware because the hackers use lateral movement once a single machine or device is compromised.
Dividing a network into smaller, manageable segments reduces the attack surface. This subdivision limits the spread of cyber threats, ensuring that a breach in one segment does not compromise the entire network. The advent of IoT, cloud computing, and remote work models has expanded the traditional network perimeter, introducing new vulnerabilities and complexities. Network segmentation delivers better separation between OT and IT networks, ensuring that user compromises in the IT domain do not leak into the operational network.
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