Zero Trust in practice: a 90-day starting plan

“Never trust, always verify” sounds simple; implementing it is not. A phased plan keeps progress visible.

Days 1–30: visibility

• Inventory users, devices, applications and data flows.
• Enforce MFA for all remote and privileged access.
• Identify crown-jewel systems.

Days 31–60: control

• Introduce conditional access based on device health.
• Segment the network around critical systems.
• Deploy privileged access management for admins.

Days 61–90: monitor & improve

• Feed identity, endpoint and firewall logs into the SIEM.
• Define incident playbooks and run a tabletop exercise.
• Map controls to NCA ECC or ISO 27001 for reporting.

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