Zero Trust Architecture

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⚡What is it?

Zero Trust is a modern cybersecurity strategy based on "never trust, always verify," assuming no user or device is inherently safe, even inside a network, aka end-to-end "perimeterless" security architecture which requires strict identity verification, least-privilege access, and continuous validation for every resource request, moving from location-based trust to identity-centric security for complex cloud environments.

⚡Approach

This approach prevents attackers from moving laterally, significantly reducing breach impact by microsegmenting networks and strictly controlling data access.

Core Principles

• Verify Explicitly

  • Always authenticate and authorize based on all available data points (identity, location, device health).

• Least Privilege Access

  • Grant just enough access (Just-In-Time/Just-Enough-Access) for a specific task, not broad network access.

• Assume Breach

  • Design systems assuming attackers are already present, minimizing their ability to move around.

Key Components & Technologies

• Identity & Access Management (IAM):

  • Strong multi-factor authentication (MFA) for users and devices.

• Device Compliance

  • Checking device health (patching, malware) before granting access.

• Microsegmentation

  • Dividing networks into small zones to contain breaches.

• Zero Trust Network Access (ZTNA)

  • Securely connecting users to specific apps, not the entire network.

• Continuous Monitoring

  • Constantly inspecting and logging traffic for anomalies.

Why It Matters

• Secures Modern Work

  • Protects remote workers, cloud apps, and IoT devices, unlike traditional perimeter security.

• Reduces Breach Impact

  • Limits lateral movement, shrinking the "blast radius" of an attack.

• Meets Compliance

  • Aligns with new regulations, like the U.S. federal mandate for Zero Trust.

⚡Summary

Zero Trust shifts security from protecting the network perimeter to protecting individual resources, treating every access attempt with suspicion until proven legitimate.