Maintaining IT security is based on a simple test: what's inside a company's network is secure. The problem is that this assumption is no longer valid.
The modern threat makes one thing clear: cybercriminals no longer need to "break in from the outside." Very often, they're already inside.
That's why more and more organizations are implementing the Zero Trust model, which is based on the principle: trust no one and nothing – always verify.
What is Zero Trust?
Zero Trust is a security exemption that allows:
- No device or device can be trusted,
- Every access attempt must be verified,
- Access is limited to a limited, accessible scope.
It doesn't matter whether a user can leave or connect to the outside world – the principles are the same.
Why doesn't the traditional solution work anymore? The "trusted internal network" model fails because:
- employees are remotely controlled from various devices,
- data is located in the cloud, not just in the company infrastructure,
- cybercriminals distributing people, not just systems,
- attacks are becoming more targeted and harder to detect.
The result? A single breach is enough to gain access to the entire organization.
Key threat responsible for the emergence of Zero Trust
- User account hijacking
- Phishing, data, or malicious data that can be infected by an employee.
Risk: full access to systems without arousing suspicion.
- Phishing, data, or malicious data that can be infected by an employee.
- Infected devices
- A laptop can be infiltrated by malware—especially when working remotely.
Risk: access to the corporate network becomes a gateway for productivity.
- A laptop can be infiltrated by malware—especially when working remotely.
- Lateral attacks (traveling across the network)
- Once a cybercriminal gains access, they are not one of the systems.
Risk: gradual transfer of resources and escalation of privileges.
- Once a cybercriminal gains access, they are not one of the systems.
- Unauthorized cloud access
- Misconfigurations or lack of access controls can transmit data
Threat: access to sensitive information.
- Misconfigurations or lack of access controls can transmit data
- Internal threats (insider threats)
- Not every incident is the result of external hackers.
Risk: - Deliberate actions by an employee
- accidental errors (e.g., data disclosure).
- Not every incident is the result of external hackers.
- Excessive privilege.
- Employees often have access to more resources than they need. This is mainly due to a lack of awareness in assigning appropriate access levels.
Risk: one compromised account = access to multiple systems.
- Employees often have access to more resources than they need. This is mainly due to a lack of awareness in assigning appropriate access levels.
How does Zero Trust respond to threats?
The Zero Trust model introduces available risk mitigation mechanisms:
- Identity verification at every login and every access attempt is verified.
- Privilege principle (least necessary privileges)
Users have access only to what they need, both to physical resources (e.g., printers) and to programs used. - Network Segmentation
- Resources are fragmented—no broad access to the entire network for all users is possible. This means that, in the event of a system compromise, an attacker has access to a limited portion of the network.
- Behavior Monitoring and Analysis
Unusual activity can be detected in real time. - Device Verification
- Only devices that meet specific security standards are granted access.
What Happens Without Zero Trust?
The absence of this approach often means:
- rapid spread of attacks within the organization,
- difficulty detecting breaches,
- greater financial and reputational losses,
- lack of control over who has access to data.
Is Zero Trust only for large companies?
No. Implementation can be more extensive in corporations; the basic principles can be applied to any organization:
- implementation of 2FA,
- restricting permissions,
- controlling access to systems,
- user activity.
Summary
Zero Trust is not a buzzword—it's a response to a real threat in the modern world. Instead of assuming that "everything is secure," it's better to assume that every connection is a potential one.
In today's world, this isn't a sophisticated state—it needs to be constantly updated.
