Advanced Cybersecurity & Threat Landscape
Zero Trust Architecture Blueprint
Zero trust assumes the network is already compromised and verifies every request by identity, device posture, and context rather than by IP address. It replaces VPN castle-and-moat designs with per-resource access policies. The work is mostly policy and identity hygiene, not buying a product labeled zero trust.
Pontos principais
- Start with identity: enforce MFA, single sign-on, and conditional access for every user and service account.
- Inventory resources and who actually needs them; default deny, then grant least privilege per application.
- Verify device posture before granting access: patched OS, EDR running, disk encryption enabled.
- Replace broad VPN access with per-application proxies that expose only specific services.
- Segment east-west traffic so a compromised host cannot reach every other host on the LAN.
- Log every access decision and review anomalies such as impossible travel or unusual device usage.
- Automate provisioning and deprovisioning so access follows HR events within hours, not weeks.
- Pilot with one high-value application before rolling the model across the estate.
Perguntas frequentes
Is zero trust a product I can buy?
No. It is an architecture; products implement pieces, but the value comes from policy, identity, and segmentation discipline.
Does zero trust replace the firewall?
No. Firewalls still matter at the edge; zero trust adds verification inside the perimeter.
How long does a zero trust rollout take?
A pilot takes weeks; a full estate migration typically spans quarters and needs sustained ownership.
What is the most common failure?
Treating it as a network project instead of an identity and access project, which leaves the same overprivileged accounts in place.
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