ANSWERED: How To Implement Zero Trust in Your Organization

Corporate cybercrime is on the rise.

Security breaches increased by 34 percent from 2024 to 2025, and there are no signs that this trend is slowing down.

You know your organization needs to take concrete steps to counter the rise in cybercrime and keep your company’s data safe. Implementing a Zero Trust Architecture (ZTA) might just be the cybersecurity solution you’ve been searching for. As a busy IT professional, it can be challenging to get an initiative of this magnitude off the ground while still managing your existing responsibilities.

Let’s take a closer look at Zero Trust. We’ll outline what Zero Trust can do for your organization and provide a step-by-step guide on how to implement Zero Trust in your organization.

Quick answer: Implementing Zero Trust means moving away from perimeter-based security toward continuous verification of every user, device, and connection. In practice, that means five steps: (1) define your protect surface, (2) identify users and access levels, (3) map your Zero Trust architecture, (4) build a Zero Trust policy, and (5) continuously monitor and adjust. There’s no single product that delivers Zero Trust in a clean package. It’s a strategy that combines access controls, segmentation, policy, and ongoing integrity monitoring.

Below, we’ll break down what Zero Trust actually does for your organization and walk through a step-by-step guide for implementing it, including where it tends to break down in practice, and what to put in place so it doesn’t.

What is Zero Trust in Cybersecurity? 

According to Executive Order (EO) 14028, issued in May of 2021, Zero Trust is a security model that:

“assumes that a breach is inevitable or has likely already occurred, so it constantly limits access to only what is needed and looks for anomalous or malicious activity. Zero Trust Architecture embeds comprehensive security monitoring; granular risk-based access controls; and system security automation in a coordinated manner throughout all aspects of the infrastructure in order to focus on protecting data in real-time within a dynamic threat environment.”

In other words, the Zero Trust model continuously verifies every user’s identity and every device’s integrity, rather than trusting anything just because it’s inside the network perimeter. Traditional perimeter-based models assume any activity inside the network can be trusted, focusing solely on preventing outside attackers from gaining access. Although these methods have their merits, they leave your organization vulnerable to insider threats, which IBM estimates account for upwards of 60 percent of all attacks.

With hybrid and remote work now the norm, the “perimeter” itself has dissolved. Organizations need to secure not just the traditional network perimeter, but remote users, cloud services, and edge devices, as well.

What Are the Goals of a Zero Trust Architecture

The objectives of implementing Zero Trust in your organization are as follows:

• Minimize malicious access to resources
• Minimize attacker ‘dwell time’ within the environment
• Prevent unauthorized lateral movement throughout the environment
• Minimize attackers’ ability to act on their objectives
• Minimize the impact of a malicious presence within the environment

The core principle behind Zero Trust is simple: never trust, always verify. Under Zero Trust, users get the lowest possible level of permissions required to perform their job duties, systems continuously reauthenticate and monitor activity, and the organization operates under the assumption that a breach is already possible or already happening.

Armed with this critical information about Zero Trust, here’s how to actually implement Zero Trust in your organization.

How Do You Implement Zero Trust? 5 Steps

1. Establish Your Protect Surface 

The first step you’ll need to take to implement Zero Trust is establishing your protect surface.

What is a protect surface? Your protect surface is the data, devices, services, and applications your organization wants to protect.

Many cybersecurity methods aim to reduce the attack surface or points in your system where an attacker may try to enter. However, your organization’s attack surface is continually expanding in ways that are challenging to manage and predict.

Defining a protect surface instead lets you concentrate your controls as close as possible to what actually matters.

Common components of a protect surface include:

• Credit card information
• Personally identifiable information (PII)
• Protected health information (PHI)
• Active Directory services
• DNS services

During this phase, map out how different applications in your tech stack interact, especially anywhere the same sensitive data lives across multiple systems.

2. Identify Users and Access Levels 

Next, identify every user and device that needs access to your organization’s resources. This is more than just obtaining a list of your current employees and their roles. During this phase of the process, you will need to consider all users and devices requiring access to your organization’s resources, including:

• Employees
• Contractors
• Developers
• System administrators
• Workstations
• Smartphones
• Routers
• Modems

Once you understand who and what needs access, micro-segmentation can begin.  Micro-segmentation is the process of protecting data and resources by creating network segments tailored to the specific needs of the users within them. Micro-segmentation ties specific user accounts to defined roles, so each person or device gets only the access required to do their job and nothing more.

3. Map Your Zero Trust Architecture 

With your protect surface and user access levels defined, it’s time to map your Zero Trust network architecture. This architecture should be built specifically around defending the protect surface established in step one. There’s no generic template that works for every organization, so be sure to customize based on your organization’s needs.

Take the micro-segments you created in step two and determine the rules for which segments get access to which resources within the protect surface. A next-generation firewall works well as the gateway for building the perimeters around each piece of your protect surface, giving you granular, layered access control so only the users and devices that need specific data get it (and only when they need it).

4. Outline a Zero Trust Policy 

With your architecture defined and mapped, the next step is formalizing your Zero Trust policy. The most common framework for this is the Kipling Method, which asks:

• Who needs access?
• What application or service is used to access a given resource?
• Where is this data or resource being used?
• When does the user need access to this resource?
• Why does the user need access to the resource?
• How is the user able to access the resource within the protect surface?

A clear and specific policy is what makes sure the architecture from step three is actually enforced in practice. This is also the stage to account for upstream and downstream resources. In other words, the data that needs to flow into the protect surface (upstream resources), and data that needs to flow out of it (downstream resources) for each business process.

5. Continuously Monitor Your Network 

Zero Trust implementation doesn’t end once your architecture and policy are in place. It’s an ongoing discipline. You will want to keep a close eye on all the logs for every layer of your new network architecture. Log and inspect all traffic to gain new insights about your network usage. This process will allow you to adjust your architecture as needed in the future.

This stage can start to feel overwhelming fast. Real-world Zero Trust environments generate thousands of alerts a day, and sorting through the alerts that matter from all the noise is one of the biggest operational challenges teams face.

This is where integrity monitoring becomes essential to making Zero Trust work in practice, not as a replacement for the strategy above, but as a mechanism that continuously verifies your environment actually matches your intended state. A System Integrity Assurance solution like CimTrak detects unauthorized or unexpected changes in real time, giving your team dynamic version control and the ability to automatically roll back unauthorized changes. Instead of drowning in alerts, your team sees only the changes that actually matter, which is what makes the “continuous verification” principle at the heart of Zero Trust sustainable day-to-day.

There's No Single "Zero Trust Solution" (and that's the point)

No product or platform is Zero Trust. Zero Trust is a strategy. Your Zero Trust network architecture will be specific to your business, data, and employees’ access needs. Implementing Zero Trust can feel like a heavy lift; however, when the alternative is leaving your organization open and at risk of data breaches that could cost thousands or even millions of dollars, that lift is worth the effort.

Figuring out how to implement Zero Trust and monitoring a Zero Trust network can be a full-time job—but it doesn’t have to be.

By implementing a robust and advanced file integrity monitoring software that aligns with Zero Trust initiatives, you can focus your attention and efforts on the alerts that matter rather than wasting time sifting through the ones that don’t. Meanwhile, all the other alerts are immediately reconciled in real-time and ready for you to review if needed.

CimTrak offers you the ability to quickly and easily manage a secure and compliant IT infrastructure, with the peace of mind that you’re addressing Zero Trust as well. But how will you know the common pitfalls of Zero Trust? Download the Missing Components of Zero Trust e-book to discover precisely what to avoid and how to implement and monitor your Zero Trust solution with ease.

Zero Trust Frequently Asked Questions

What is the first step in implementing Zero Trust?

The first step is defining your protect surface, which is the specific data, applications, and services your organization needs to protect the most, rather than trying to secure your entire attack surface at once.

How long does it take to implement Zero Trust?

There really is no fixed timeline. It depends on the size of your protect surface, the complexity of your environment, and how mature your current access controls are. Zero Trust is also an ongoing process rather than a one-time project, since monitoring and policy refinement continue indefinitely.

What is micro-segmentation in Zero Trust?

Micro-segmentation is the practice of dividing a network into smaller, isolated segments based on user roles and access needs, so that a breach in one segment can’t move laterally into others.

For more information on this, check out our blog: Microsegmentation Zero Trust: Your Guide to the Fundamentals

Why is continuous monitoring important in a Zero Trust model?

Zero Trust assumes a breach is possible or already underway at all times. Continuous monitoring (including file and system monitoring) is what makes that assumption actionable. By detecting unauthorized changes or anomalous activity as they happen rather than after the fact.