Implement network segmentation based on the Purdue Enterprise Reference Architecture (PERA) model, separating ICS networks into hierarchical security zones from Level 0 (SKILL.md metadata excerpt)
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Designs and implements a ransomware-resilient backup strategy following the 3-2-1-1-0 methodology (3 copies, 2 media types, 1 offsite, 1 immutable/air-gapped, 0 errors (SKILL.md metadata excerpt)
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Hardens Kubernetes RBAC by designing least-privilege Roles and ClusterRoles, auditing RoleBindings, eliminating cluster-admin sprawl, separating service accounts, and integrating an external OIDC (SKILL.md metadata excerpt)
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