Security First

We protect what matters most: your data, your reputation and your business.

Language

Cybersecurity 6 min read

Zero Trust Architecture: The perimeter is dead.

Published:

December 27, 2025

Zero Trust Architecture

The end of implicit trust

For decades, computer security was based on a simple premise: everything inside the corporate network is safe, and everything outside is a threat. This model, known as "perimeter defense" or "castle and moat", worked when data lived on physical servers in the office basement.

But the world has changed. The cloud, widespread remote work and the use of personal devices have dissolved that perimeter. Today, identity is the new perimeter. If we continue to trust blindly in "internal" connections, a single compromised device allows an attacker to move laterally throughout the network without being detected.

Modern Security Strategy

Implementing Zero Trust is not buying a product, it is adopting a mindset. It requires explicitly verifying every access request, no matter where it comes from. We use the principle of "least privilege", granting only the access necessary to perform a specific task.

Security Strategy
Network Segmentation
Access Control

Network segmentation is key. By dividing the network into small and controlled zones, we prevent an attacker from jumping from one system to another. In addition, continuous monitoring and behavioral analysis allow us to detect anomalies in real time.

“In cybersecurity, trust is not a virtue, it is a vulnerability. Verify always, trust never.”

Zenith Privacy

For a successful implementation, it is crucial to have total visibility of assets. You cannot protect what you do not see. Multi-factor authentication (MFA) stops being optional and becomes a mandatory requirement for every access.

Conditional Access Policy

At Primitive, we configure dynamic policies. For example, if a user attempts to access sensitive data from an unusual location, the system automatically blocks access. This is adaptive security.

A simple Zero Trust policy might look like this on a firewall:

  • Source: Validated User (MFA)
  • Destination: Specific Application
  • Action: Permit and Inspect
  • Log: Log all traffic
    policy-map global_policy {    
        class class-default {
            inspect zero-trust-proto;
            police rate 100 mbps;
        }
    }

Adopting this model drastically reduces the attack surface and limits the impact of breaches. In an environment where threats constantly evolve, Zero Trust is the way.