Why Zero Trust Security is a Game-Changer for Network Security

Sindhu P   

Network security is a set of practices that helps organizations protect the confidentiality, integrity, and availability of data transmitted over a network. It involves a range of technologies, processes, and policies designed to prevent unauthorized access, misuse, and attacks on a computer network. Over the years, it has evolved from simple password-based authentication to more complex security models.

Some common elements of network security include:

  • Firewalls
  • Virtual Private Networks (VPNs)
  • Encryption
  • Access control
  • Intrusion detection and prevention
  • Security patches and updates


However, these traditional security models have limitations and can no longer provide adequate protection against modern security threats.

Network security is crucial in protecting organizations from cyberattacks, data breaches, and other security threats. It has become an essential security strategy for businesses of all sizes.

This is where Zero Trust Security comes in

According to Gartner, below are the results of the poll on which products enterprises will most likely invest in 2023:


Furthermore, Gartner predicts that over 60% of organizations will embrace zero trust as a starting place for security by 2025.

What is Zero Trust?

Zero trust is a security model that assumes all network resources and devices are potentially untrusted and should be treated as such, regardless of their location or origin. The goal is to reduce the attack surface and prevent security breaches by limiting access to sensitive data and systems.

Zero Trust Security Model  

The Zero Trust model grants network resource access per-request basis, evaluated based on user or device identity and context. Access is only granted after thorough evaluation and is monitored continuously throughout the session.

The Main Components of a Zero Trust Security Model:

Identity and Access Management (IAM):

IAM is at the core of the Zero Trust Security model. It ensures that users, devices, and services are effectively identified, authenticated, and authorized before granting access to network resources.


It involves dividing the network into smaller, more manageable segments, each with its own set of security policies and controls.

This helps to limit the scope of any security breaches and reduce the risk of lateral movement by attackers within the network.

Controlling Access:

Least privilege access rights are a fundamental principle of zero trust security. In this model, access to resources is granted on a "need-to-know" basis, and users are only given the minimum privileges needed to perform their tasks.

Continuous Monitoring and Analytics:

It involves continuous monitoring of network traffic, device activity, and user behavior, and using machine learning and AI-based analytics to detect anomalies and potential security threats.

Business Benefits of Implementing Zero Trust

  • Security extended beyond single network locations
  • Efficient threat detection and containment
  • Improved user experience and employee productivity
  • Long-term network security cost savings
  • Greater visibility and simplified compliance
  • Flexibility and adaptation

Challenges of Implementing Zero-Trust Security

While zero-trust security offers many benefits, implementing this model can be challenging. Some of the key challenges include:


Implementing zero-trust security can be a complex and time-consuming process requiring significant changes to the network architecture, security policies, and user access controls. Organizations may need to invest in new security tools and technologies and may require the expertise of security professionals.

User Experience:

The zero-trust security model can impact the user experience as it may require additional authentication steps and increased scrutiny of user activity. It can lead to frustration among users, particularly if security measures are perceived as overly burdensome.

Legacy Systems:

Legacy systems may not be compatible with new security tools and technologies, making it difficult to achieve the desired level of security.

Cultural Change:

Implementing zero-trust security requires a cultural change within the organization, focusing on security awareness and best practices. It may require significant education and training efforts and may encounter resistance from employees accustomed to a more permissive security model.

Despite these challenges, the benefits of implementing zero-trust security make it a worthwhile endeavor for many organizations. By taking a comprehensive and strategic approach, organizations can achieve a higher level of security and protect themselves from the increasing threat of cyberattacks.

Best Practices for Implementing Zero-Trust Security

Below are the best practices for achieving zero-trust security:

Adopt a Risk-based Approach:

Zero Trust Security requires identifying the assets that need to be protected, assessing the risks associated with each asset, and then designing and implementing appropriate security controls.

Use Multi-Factor Authentication (MFA):

Multi-factor authentication (MFA) is an effective way to prevent unauthorized access to systems and data. It must be applied regardless of the user: end-user, privileged user, outsourced IT, partner, or customer, and regardless of the resource being accessed.

Implement Network Segmentation:

Network segmentation involves dividing a network into smaller, isolated subnetworks. It can help prevent lateral movement by attackers, limiting the damage caused by a successful breach.

Monitor and analyze network activity:

Continuous monitoring of network activity can help detect and respond to security threats in real time. Use tools like intrusion detection and prevention systems (IDPS) and security information and event management (SIEM) solutions.

Implement least privilege access:

Grant users the least access they need to perform their job functions. It can help limit the damage caused by a compromised user account.

Encrypt data in transit and at rest:

Encryption helps protect sensitive data from unauthorized access or theft. Implement encryption for data in transit and at rest using industry-standard encryption algorithms.

Conduct regular security audits:

Conduct regular security audits to identify vulnerabilities and ensure that security controls are working as intended. Regular audits can help identify gaps and potential weaknesses in your security posture, allowing you to take proactive measures to mitigate risk.


Zero Trust Security is a game-changer for network security. It provides a more robust and effective security model that can protect organizations from modern security threats.

At Cymune, we help organizations implement Zero Trust solutions for network security. We provide a range of services and tools to help organizations build a Zero Trust architecture.

We are also, a strategic and professional services partner to Palo Alto, helps enterprises to achieve better security outcomes, simplify infrastructure, lower operational costs & extend zero trust to the endpoint. Contact us for more details.