A healthcare organization relies on specialized equipment that operates on a legacy system which cannot be patched due to vendor abandonment. To maintain the highest level of security, what should be the organization's FIRST step in mitigating the risks associated with the inability to patch this system?
Applying antivirus software updates more frequently
Deploy an additional firewall specifically for the legacy system
The correct answer is 'Network segmentation'. This practice would isolate the legacy system from the rest of the network, reducing the potential impact of a vulnerability being exploited. While other options like intrusion detection systems and replacement could also be considered, they do not immediately address the risk of the legacy system being compromised. Network segmentation is a straightforward mitigation step that can be applied without requiring the removal of critical, yet non-patchable, equipment.
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Why is network segmentation the best first step for securing legacy systems?
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How does network segmentation differ from deploying a firewall for protection?
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What are some additional steps that can complement network segmentation in securing legacy systems?