Imagine a company with 30 employees. Everyone uses the same office network, several employees work remotely, and different departments have access to shared business systems.
One afternoon, an employee’s email password is compromised.
The attacker successfully signs in. Because the organisation relies heavily on trusting anyone who has already connected to its network, the compromised account may have more access than it actually needs.
The attacker can now attempt to reach internal applications, access company files or move towards other systems.
This is one of the problems that Zero Trust security is designed to address.
Instead of automatically trusting users because they are inside an office network or have successfully signed in once, Zero Trust requires access to be verified according to identity, permissions and other relevant security conditions.
For Zimbabwean businesses adopting cloud services, remote working and digital operations, this approach offers a practical way to strengthen control over company information.
This guide explains what Zero Trust security means, how it works, why businesses need it and how organisations can implement it without building an expensive internal cybersecurity department.
What Is Zero Trust Security?
Zero Trust is a cybersecurity approach based on a simple principle: never automatically trust a user, device or connection simply because it appears to be inside an organisation’s network.
Every request to access a protected business resource should be evaluated according to the organisation’s security policies.
This may involve checking:
- Who is requesting access.
- Whether the user’s identity has been verified.
- Which application or resource they want to access.
- Whether they are authorised to access it.
- Whether the device meets relevant security requirements.
- Whether the request presents unusual risk.
The concept is often summarised as “never trust, always verify”.
The National Institute of Standards and Technology (NIST) describes Zero Trust Architecture in its Special Publication 800-207. The framework moves security away from relying primarily on traditional network boundaries and towards protecting individual users, devices, applications and resources.
This is important because modern businesses no longer operate entirely inside one office.
Employees may connect from home, use mobile devices, access cloud applications and work with external partners. Business information may also be stored across several different platforms.
A traditional network perimeter cannot provide sufficient protection for every situation.
Zero Trust addresses this by making access control more specific and deliberate.
How Does Zero Trust Security Work?
Traditional network security often focuses on protecting the boundary between an internal network and the outside world.
A firewall controls traffic entering and leaving the network. Once someone is connected internally, however, additional controls are needed to determine what that person should be allowed to access.
Zero Trust takes a more detailed approach.
Rather than giving users broad access simply because they have connected successfully, it applies permissions to individual applications and resources.
Consider a business with three departments:
- Finance.
- Human Resources.
- Administration.
The finance team needs access to accounting software and financial records. Human Resources needs access to employee information. Administration needs access to its own operational systems.
Under a poorly controlled network arrangement, employees may be able to reach systems that have nothing to do with their responsibilities.
With Zero Trust, each employee receives access based on their role.
A finance employee may access accounting software but not confidential HR records. A receptionist may access appointment systems without being allowed to open payroll information.
The objective is to ensure that employees can do their jobs without receiving unnecessary access to sensitive information.
7 Important Principles of Zero Trust Security
Zero Trust is not simply a software product. It is an approach to designing and operating business security.
The following principles help explain how it works.
1. Verify Every User
Every user should have an identifiable account rather than relying on shared credentials.
Access should be granted only after the organisation has verified the user’s identity.
Multi-factor authentication adds another layer of verification by requiring an additional factor beyond a password.
For example, an employee may need to enter a password and approve a sign-in through an authenticator application.
This helps reduce the risk associated with stolen or reused passwords.
2. Apply Least-Privilege Access
Employees should only receive the permissions necessary to perform their responsibilities.
This is known as the principle of least privilege.
For example, a finance employee may need access to accounting applications, while a marketing employee may need access to content management and marketing platforms.
There is no reason for every employee to have unrestricted access to payroll records, customer databases or administrative systems.
Limiting access reduces the potential damage if an account is compromised.
3. Verify Devices and Their Security Posture
A legitimate employee may attempt to access company systems using an unsafe device.
For example, an employee may use a personal laptop that has not received security updates or has no effective malware protection.
Zero Trust architectures can evaluate device security posture before allowing access to certain resources.
Depending on the solution, this may involve checking device identity, operating system status, security configuration and other relevant signals.
Device checks should be appropriate to the sensitivity of the information being accessed.
4. Control Access to Individual Applications
Traditional VPN arrangements often provide users with access to a broader internal network once they connect.
Zero Trust Network Access (ZTNA) takes a more application-focused approach.
Instead of automatically allowing a remote employee to access an entire network, the system can provide access only to approved applications.
For example, a finance employee working from home may be allowed to access the accounting application without receiving unrestricted access to the company’s internal network.
This can reduce the number of systems exposed to an individual account.
5. Monitor Access Activity
A Zero Trust system should provide visibility into who accesses protected resources and when.
This helps organisations investigate unusual activity and understand how employees use business applications.
For example, a company may want to identify repeated failed login attempts, unexpected access to sensitive applications or suspicious data transfers.
Monitoring is particularly useful when combined with documented security policies and an incident response process.
6. Assume That Security Incidents Can Happen
Zero Trust does not assume that every employee account or device will remain safe forever.
A password may be stolen. A laptop may become infected. An employee may accidentally share confidential information.
The architecture should therefore limit what an attacker can do if one account or device is compromised.
This is one reason least-privilege access and application-level controls are so important.
7. Review and Adapt Security Policies
Business requirements change.
Employees join and leave, departments change responsibilities, new applications are introduced and working arrangements evolve.
Access policies should be reviewed regularly to ensure that they still reflect how the organisation operates.
A company should not assume that a permission granted two years ago is still appropriate today.
Why Are Zimbabwean Businesses Considering Zero Trust?
Many organisations have changed how they work.
Employees may access business email from their phones, use cloud applications from home and share documents with customers or external partners.
Some companies have offices in different locations, while others operate with employees who travel regularly.
These arrangements are useful, but they create additional access management challenges.
1. Employees Work From Different Locations
A business may have employees working from Harare, Bulawayo, Mutare or outside Zimbabwe.
Traditional security arrangements that rely on a single office network may not provide sufficient control over these connections.
Zero Trust can help apply consistent access policies regardless of where an employee works.
2. Businesses Use More Cloud Applications
Many companies rely on Microsoft 365, Google Workspace, accounting platforms, customer relationship management systems and other cloud services.
These systems may contain important business information.
Zero Trust helps organisations control access to resources individually rather than assuming that securing the office network is enough.
3. Shared Passwords Create Unnecessary Risk
Some smaller organisations use shared VPN passwords or common accounts to simplify access.
This makes it difficult to determine who accessed a resource and increases the risk associated with a leaked credential.
Individual user identities and role-based permissions provide better accountability.
4. Former Employees May Retain Access
One commonly overlooked security problem is failing to remove access when an employee leaves.
A former employee may still have access to email, shared files, internal applications or other business resources.
A proper offboarding process should revoke access promptly across the systems the employee used.
5. Businesses Need Better Control Over Sensitive Information
An organisation may have dozens of employees but only a small number should be able to access payroll records, financial information or confidential customer files.
Zero Trust provides a way to apply more specific permissions.
This is particularly relevant to organisations handling sensitive personal information or commercially confidential documents.
Zero Trust vs Traditional VPN Security
Virtual Private Networks (VPNs) have been used for many years to provide secure remote access to business networks.
They remain useful in appropriate environments, but traditional VPN access can be broader than an organisation actually needs.
A user who connects to a VPN may receive access to network resources that are not necessary for their role, depending on how the system is configured.
Zero Trust Network Access focuses on granting access to specific applications and resources.
| Area | Traditional VPN approach | Zero Trust approach |
|---|---|---|
| Access | Often provides network-level access | Grants access to specific resources |
| Identity | Authentication at connection | Identity evaluated for resource access |
| Permissions | May be broad | More granular and role-based |
| Remote working | Connects users to a private network | Connects users to approved applications |
| Monitoring | Depends on VPN and network controls | Can provide resource-level access visibility |
| Security model | Often relies heavily on network boundaries | Does not automatically trust network location |
This does not mean every VPN is insecure or that Zero Trust automatically replaces all network security equipment.
A properly configured VPN can still be part of a secure environment. The important distinction is whether access is appropriately restricted and continuously evaluated.
What Is Zero Trust Network Access (ZTNA)?
Zero Trust Network Access is a technology approach that applies Zero Trust principles to access between users and private applications.
It provides an alternative to exposing internal applications through traditional network access arrangements.
For example, imagine a company that operates an internal accounting application.
The organisation wants its finance employees to access the application remotely, but it does not want every remote employee to have access to the entire internal network.
A ZTNA solution can authenticate the employee and allow access to the specific application they are authorised to use.
This can help reduce the exposure of internal systems and simplify remote access management.
ZTNA is particularly relevant to organisations using cloud applications, remote teams and multiple office locations.
How Zero Trust Helps Protect Business Information
One of the biggest advantages of Zero Trust is that it focuses on controlling access to information rather than simply protecting the network perimeter.
Consider a company that stores financial records, employee information and customer databases.
If every employee has unrestricted access, a compromised account could expose a significant amount of information.
With properly designed access policies:
- Finance employees can access financial systems.
- HR employees can access employee records.
- Marketing employees can access approved marketing platforms.
- Contractors can access only the applications needed for their work.
- Former employees lose access when their contracts end.
Some Zero Trust platforms also provide data-loss prevention capabilities.
These controls can help restrict certain activities, such as uploading sensitive company information to personal cloud storage or unapproved applications.
However, data-loss prevention policies must be configured carefully. Businesses should test the rules to avoid blocking legitimate work or disrupting important applications.
How Can a Business Implement Zero Trust?
Zero Trust does not need to be introduced across an entire organisation in one day.
A practical implementation should begin with understanding which users, devices and applications need protection.
Step 1: Identify Important Business Systems
Start by listing the applications and systems that employees use.
These may include:
- Business email.
- Accounting software.
- Payroll systems.
- Customer databases.
- Document storage.
- Internal business applications.
- Remote access systems.
Identify which systems contain the most sensitive information.
Step 2: Identify Who Needs Access
Create a list of employees and the systems they need to perform their work.
Group users according to their responsibilities.
For example, finance employees may need accounting and payment applications, while marketing employees may need access to the website and social media management tools.
This creates a foundation for role-based access policies.
Step 3: Introduce Strong Authentication
Use individual accounts rather than shared passwords.
Enable multi-factor authentication for important business systems and establish procedures for managing credentials.
Where possible, integrate access policies with the organisation’s existing identity provider.
Step 4: Restrict Access to Specific Applications
Avoid giving employees unrestricted access to internal networks when they only need a small number of applications.
Consider a ZTNA solution that allows users to access approved resources according to their role.
Step 5: Review Device Security
Identify the devices employees use to access business information.
Determine which devices meet the organisation’s security requirements and whether additional controls are needed.
Remember that access security and endpoint security are different responsibilities. A Zero Trust access service does not automatically remove malware or encrypt a stolen laptop’s hard drive.
Step 6: Establish Joiner and Leaver Procedures
Create a process for granting access when employees join and removing it when they leave.
The process should cover email, cloud applications, internal systems, shared accounts and other resources.
Access should be removed promptly, not weeks after an employee has departed.
Step 7: Monitor and Improve the Policies
Review access logs, blocked requests and security reports.
If employees are repeatedly blocked from legitimate applications, the policy may need adjustment.
Likewise, if users have access to resources they no longer require, permissions should be tightened.
A successful Zero Trust deployment should support business operations while reducing unnecessary exposure.
Is Zero Trust Only for Large Companies?
No.
Zero Trust is often associated with large enterprises because they have complex IT environments, many employees and extensive application requirements.
However, smaller businesses can also benefit from its principles.
A company with ten employees may still have sensitive financial information, customer records and important internal applications.
In fact, smaller organisations may have more difficulty managing access because one employee often performs several roles.
The important thing is to start with the risks that matter most.
A small business might begin by securing its finance team, introducing individual accounts, enabling multi-factor authentication and restricting access to accounting systems.
It can then expand the approach as its requirements grow.
How Much Does Zero Trust Security Cost in Zimbabwe?
The cost depends on the number of employees, the applications being protected and the level of management required.
Some Zero Trust products provide free entry-level plans, while more advanced features may require paid subscriptions.
Businesses should compare the cost of the underlying technology with the time and expertise required to implement and manage it.
Tremhost offers Armor Workforce, a managed Cloudflare Zero Trust service for organisations that want assistance designing and operating staff access policies.
Tremhost Armor Workforce Pricing
Armor Workforce is listed at:
- $5 per person per month.
- Minimum of 10 people.
- $50 per month for the minimum team size.
- Annual billing: two months free, equivalent to $50 per person per year.
- Minimum annual cost: $500 for 10 people.
The service includes policy design, rollout assistance and ongoing administration.
Published features include:
- Access to internal systems without a traditional VPN.
- Access rules based on employee roles.
- Web filtering across supported devices.
- Data-loss prevention controls.
- Microsoft 365 and Google Workspace security posture checks.
- Joiner and leaver administration.
- Monthly access and security reports.
- Local technical support from Tremhost’s team in Harare.
What Does the $5 Per Person Cover?
The important distinction is that businesses are paying for more than access to the underlying technology.
Cloudflare offers a free Zero Trust plan for up to 50 users, subject to its feature and plan limitations. Businesses should not assume that purchasing managed services is necessary simply to obtain the basic licence.
Armor Workforce is intended for organisations that want assistance with the work around implementation and administration.
That includes designing access policies, rolling them out, responding to employee questions and managing access changes when people join or leave.
For a business without dedicated internal security personnel, this operational support may be valuable.
You can explore the service at Tremhost Armor Workforce.
Does Zero Trust Replace Antivirus?
No.
Zero Trust and endpoint protection solve different problems.
Zero Trust controls access to applications, systems and business resources. Endpoint protection helps secure the actual computers and devices employees use.
For example, a stolen password may allow someone to attempt to access an internal application. Zero Trust policies can help restrict what that account is allowed to reach.
However, if an employee’s laptop becomes infected with malware, Zero Trust does not automatically remove the infection.
Businesses should therefore consider combining Zero Trust with:
- Endpoint antivirus and threat protection.
- Device encryption.
- Regular software updates.
- Secure backups.
- Email security.
- Employee awareness training.
Tremhost offers ESET endpoint security for businesses that need additional protection for their computers and servers.
Explore: Tremhost ESET Security.
Which Businesses in Zimbabwe Should Consider Zero Trust?
Zero Trust is useful for organisations that need to control access to internal applications and sensitive information.
Financial Services and Accounting Firms
Financial organisations handle information that should only be available to authorised employees.
Zero Trust can help restrict access to financial applications and administrative systems according to job responsibilities.
Schools and Educational Institutions
Schools may have different user groups, including administrators, teachers, finance employees and external contractors.
A well-designed access policy can help ensure that each group reaches only the systems required for its work.
Healthcare Organisations
Medical organisations may need to protect patient records, administrative systems and other confidential information.
Access should be restricted according to the responsibilities of each employee.
NGOs and Distributed Organisations
NGOs may have employees working across different cities or countries.
Zero Trust can help apply consistent access policies without requiring everyone to connect to one office network.
Businesses With Remote Employees
Companies with employees working from home or travelling regularly may find it difficult to manage access through traditional network arrangements.
ZTNA can provide a more application-focused way of granting remote access.
Businesses With Multiple Branches
Organisations with several offices may need consistent security policies across their locations.
Zero Trust can form part of a wider network security strategy, alongside suitable branch connectivity and firewall controls.
Common Zero Trust Mistakes Businesses Should Avoid
Zero Trust is not simply a matter of switching on a security product.
Poor implementation can frustrate employees, block legitimate business activities and create unnecessary complexity.
Avoid these common mistakes.
1. Giving Everyone the Same Access
The purpose of Zero Trust is to make access more specific.
If every employee receives identical permissions, the organisation is not taking full advantage of the approach.
2. Ignoring Former Employee Accounts
A strong access policy is ineffective if former employees retain access to business systems.
Offboarding must be part of the security process.
3. Forgetting Endpoint Security
Zero Trust controls access, but it does not replace antivirus, disk encryption or operating system security.
These controls should be considered together.
4. Blocking Too Much Too Quickly
Overly restrictive policies can prevent employees from completing legitimate work.
Start by understanding normal business activity, test the rules and tighten them gradually.
5. Failing to Monitor Access
Access policies should be reviewed using available logs and reports.
If nobody checks what is happening, unusual activity may go unnoticed.
6. Treating Zero Trust as a One-Time Project
Employees change roles, new applications are introduced and business requirements evolve.
Access policies need regular review.
Why Choose Tremhost Armor Workforce?
Tremhost provides Armor Workforce for organisations that want to implement Cloudflare Zero Trust without taking on every technical and administrative responsibility internally.
The service is designed for businesses with ten or more employees that need stronger control over staff access and business information.
Its published offering includes access policy design, rollout support, web filtering, data-loss prevention controls, posture checks for supported Microsoft 365 and Google Workspace environments, and joiner and leaver administration.
Tremhost also provides monthly access reporting to help organisations understand how their systems are being used.
The service is particularly relevant to businesses that currently rely on shared VPN passwords, have remote employees or struggle to remove access promptly when staff leave.
One important limitation should be understood: Armor Workforce protects access and data. It does not replace endpoint antivirus or encrypt the physical storage of a stolen laptop.
Businesses should retain appropriate endpoint protection alongside their Zero Trust deployment.
Explore Armor Workforce: https://tremhost.com/armorworkforce
Final Thoughts: Your Business Should Control Who Can Access Its Information
A business should not automatically trust every connection simply because it comes from an employee or originates inside an office network.
Employees need access to the systems required for their work, but they do not need unrestricted access to every application and file.
Zero Trust provides a more deliberate way to manage these relationships.
By verifying users, restricting permissions, checking relevant device conditions and monitoring access, businesses can reduce unnecessary exposure and improve control over important information.
For Zimbabwean organisations adopting remote work and cloud applications, this is becoming an increasingly relevant part of cybersecurity planning.
You do not need to implement everything at once. Start by identifying your most important systems, understanding who needs access and removing unnecessary permissions.
Then build a security approach that can grow with the organisation.
Secure your staff access with Tremhost Armor Workforce. Get managed Cloudflare Zero Trust from $5 per person per month, with a minimum of ten people. Visit https://tremhost.com/armorworkforce to learn more.
Frequently Asked Questions
What is Zero Trust security in simple terms?
Zero Trust is a cybersecurity approach that requires users and devices to be verified before accessing protected business resources. It does not automatically trust a person simply because they are connected to the company network.
What is the main purpose of Zero Trust?
Its main purpose is to reduce unnecessary access to business systems and information. It helps organisations verify users, apply permissions and limit the damage that can result from compromised accounts or devices.
Is Zero Trust better than a VPN?
Zero Trust Network Access can provide more specific access to individual applications instead of giving users broader network access. However, VPNs can still be useful in appropriate environments. The right choice depends on the organisation’s infrastructure and requirements.
What is Zero Trust Network Access?
Zero Trust Network Access (ZTNA) is a technology approach that allows authorised users to connect to specific internal applications according to identity and access policies, rather than automatically granting broad network access.
Is Zero Trust suitable for small businesses in Zimbabwe?
Yes. Small businesses can use Zero Trust principles to protect accounting systems, customer databases, employee records and other important applications. They can start with the systems that present the greatest risks.
How much does Zero Trust cost in Zimbabwe?
Costs vary by provider and features. Tremhost Armor Workforce is listed at $5 per person per month, with a minimum of ten people. Annual billing offers two months free.
Does Zero Trust replace antivirus?
No. Zero Trust controls access to applications and information, while antivirus and endpoint protection help secure computers and devices. Both are important parts of a broader security strategy.
Can Zero Trust protect employees working from home?
Yes. Zero Trust can apply identity and access policies to employees regardless of their location, allowing them to reach approved applications without necessarily connecting to the entire office network.
What happens when an employee leaves the company?
The organisation should revoke the employee’s access to relevant systems and applications. Tremhost’s Armor Workforce service advertises joiner and leaver administration within one working day.
Does Zero Trust prevent all cyberattacks?
No. Zero Trust reduces unnecessary access and can limit the impact of compromised accounts, but it does not eliminate every cybersecurity risk. Endpoint security, email protection, backups and monitoring remain important.
Can Zero Trust protect sensitive business information?
It can help restrict who accesses sensitive applications and information. Additional data-loss prevention controls may also help restrict certain unauthorised transfers. These controls need to be configured and monitored appropriately.
