Zero Trust Migration

We map your existing security posture: perimeter defenses (firewalls, VPNs, NAT), internal trust assumptions (flat networks, IP-based allow lists, shared credentials), identity infrastructure (directory services, SSO coverage, MFA adoption), and monitoring capabilities (logging coverage, alert quality, incident detection speed). The assessment produces a gap analysis between your current state and zero trust target state, prioritized by risk reduction.

We build a phased migration plan: Phase 1 — identity foundation (centralize identity, deploy MFA, eliminate shared credentials). Phase 2 — application access (deploy identity-aware proxies, migrate applications from VPN). Phase 3 — network segmentation (implement micro-segmentation, deploy mTLS). Phase 4 — continuous verification (add device posture, implement continuous authorization). Each phase delivers security improvements independently.

During migration, old and new security models run in parallel. VPN stays active while ZTNA is deployed. Flat network coexists with micro-segmented zones. This parallel operation prevents disruption: if the new model has an issue, the old model provides fallback. We track migration progress per application and per user group. The old infrastructure is decommissioned only after the new model is validated and the team has operated on it for at least 30 days.

Each migration phase is validated through security testing: penetration testing verifies that old trust paths are eliminated, access audits confirm that permissions are least-privilege, network scanning verifies that segmentation rules are enforced, and chaos testing validates that security controls survive component failures. Validation findings are remediated before proceeding to the next phase. The final validation confirms the VPN can be decommissioned safely.