Zero Trust: a paradigm shift in network security

In a digital world in which more and more data is exchanged via the Internet, the security of company networks is of the utmost importance.

Until now, the security architecture has been based on the concept of “trust”. Internal users and devices were largely trusted, while external connections were regarded as potential threats and blocked at the perimeter using a firewall.

However, with the rapid development of cyber attacks and advanced threats, this approach has proven to be no longer safe.

Zero Trust – Trust is good, full control is better

For this reason, a new security approach known as “Zero Trust” has emerged in recent years. Zero Trust is a concept that assumes that no connection or user is automatically trustworthy – neither inside nor outside the company network.

This approach represents a radical departure from the traditional security architecture and suggests a focus on thorough verification and authentication of all users and devices before granting them selective access to individual resources.

A variety of technologies and security mechanisms

This is achieved through the use of a variety of technologies and security mechanisms, such as

  • Multi-factor authentication,
  • Access control lists,
  • RBAC – Role Based Access Control,
  • LPA – Least Privileged Access and
  • End-to-end encryption and monitoring


Microsegmentation of the networks

An additional and important aspect of Zero Trust is the micro-segmentation of networks. Instead of using a centralized trust model in which all users and resources are grouped together in the same network segment, a zero trust approach divides the network into smaller, isolated areas .

Each segment contains only those users and resources that are specifically required for its function. In addition, access between the segments is restricted to the required minimum. This significantly reduces the risk of lateral movement, i.e. the takeover and control of other systems within the network, and limits the spread of attacks .

Zero Trust – advantages over traditional security models

Zero Trust offers a number of advantages over traditional security models. One of the key benefits is that it increases security by detecting and isolating potential threats earlier through continuous monitoring and analysis of network traffic.

Depending on the degree of implementation, this can be done automatically. Continuous verification and authentication of all users and devices significantly reduces the risk of identity theft, phishing attacks and other forms of cyberattacks. In addition, micro-segmentation enables more precise control over the data flow and minimizes the risk of data breaches and unauthorized access.

Implementation requires in-depth expert knowledge

Although Zero Trust is undoubtedly a powerful security concept, its implementation is no easy task. Rather, this requires careful planning and a gradual redesign of the network infrastructure in conjunction with the integration of various security solutions. Companies may need to adapt their current security policies, introduce new technologies and train their employees in safe behavior .

With this in mind, it is advisable to seek expert support when implementing Zero Trust. In addition, it is essential to keep up to date with the latest developments and best practices in the field of IT security.