What is zero trust? How to build a zero trust security model

What is zero trust?  How to build a zero trust security model

Every business has its own way to secure data, but there is no guarantee that the software you choose is absolutely safe for all information, there will be vulnerabilities that break the wall of protection that you cannot foresee. Okay. That is also why the zero trust security model was born. Although it cannot be guaranteed that no one can break in to steal information, the zero trust security model will create an additional network that makes the security tighter. So what is zero trust and how to build it will be in the article below.

Zero trust security model, a philosophy of network security

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  1. What is zero trust?

1.1 Zero trust concept

Zero trust is a concept of network security, is a default philosophy that all access must be thoroughly checked whether it is someone inside or outside the network. The zero trust security model works on the assumption that all threats are possible even if it is a trusted source of access.

1.2 Operation of Zero trust

Zero trust creates a line of defense based on limiting the power level of any user by reducing their access privileges to the system.

Protecting an organization’s data, associated assets, and workloads is becoming increasingly complex. Not only have internet-based attacks become more sophisticated over the years, but the variety and amount of infrastructure that organizations must protect has also increased markedly. Today, an organization can have several intranets, remote individuals, or a remote main office headquarters with their own local infrastructure and cloud services.

With this in mind, it is essential for organizations to limit the ‘attack surface’ by limiting the range of actions and data available to an individual user. If teams only have access to the data they need at any given time, the smaller the risk of a breach, whether this is ransomware, internal sabotage, or human error. Furthermore, limiting user access at any given time reduces the risk of a breach that destroys the rest of the organization’s data.

Zero trust security model helps prevent cyber attacks

The Zero Trust security model requires security teams to segment their enterprise’s network through the use of hyper-granular access privileges for users. These privileges are automatically allocated and reallocated to various users in real time based on what they need to access at the time.

Before automating access privileges, however, security teams must decide which users should have access to what information. This means that an organization will need to take the time to examine and segment their different stakeholders into the categories they can impose access privileges on, and review and segment them all. processes and data will become part of a zero trust environment.

This is a labor-intensive process as it requires security teams to start from the principle of least privilege, where you’ll consider the access you need to give your trusted employees. , i.e. someone who is both a junior and a completely newbie, or even an outside contractor, and build your zero trust security model from there. Finally, by building a licensing network, organizations can create a licensing plan that matches the realities of a business while reducing the damage from any single individual entry point being compromised. offense.

But even thorough planning and zero execution are not enough to achieve the goal of full resilience to breaches or attacks. An organization also needs to consider its last line of defense: backups and archival data.

Zero trust limits users’ access rights

  1. How to build a zero trust security model

2.1 Determination of the protective surface

You need to identify important information that needs to be protected based on DAAS principles ie:

  • Data: What is the most important data you need to protect?
  • Application: Which application is needed, contains security information.
  • Assets: What kind of assets do you need to secure such as proprietary designs, forged licenses, etc.
  • Service (service): What kind of services that people can easily access.

2.2 Limiting access to data

For important resources, limit access to ensure that users can only reach certain areas. This way, you can both control the area that users access, while limiting intrusions from malware.

2.3 Cloud storage is the mainstay of the zero trust security model

Data backup and archiving can often be considered as a method to consider after implementing a zero trust security system, with an important focus on data and implementation. However, data backup and archiving are key to ensuring business continuity. If the worst happens and you succumb to an incident that wipes out your live environment and data, your stored and backed up data are your best friends. Through them, you’ll be able to quickly restore your workflow and get back to business.

This means that integrating cloud storage into your zero trust security model should be a central pillar of the plan, you shouldn’t just limit privileged access to stored data. Instead, you should also air and isolate your backup and storage data on multiple levels by keeping multiple backups and limiting the levels and types of access to each backup, even within the security groups themselves. Ideally, you should keep at least one backup off-site.

Data backup is the backbone of the zero trust security model

Furthermore, your backup data should be immutable, also conceivable that no one can delete or modify your backed up data, preventing any changes within a certain period of time. That is, don’t trust anything, applying your backups to the strictest and most exclusive limits possible is the best way to stay safe.

In short, the zero trust security model is an effective line of defense for your IT architecture and systems. However, achieving the best results requires comprehensive planning. Only when all your data is secure and your backup data is stored in an immutable manner and without direct data exposure can you achieve a guaranteed line of defense.

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By Nguyen Manh Cuong

Nguyen Manh Cuong is the author and founder of the nguyendiep blog. With over 14 years of experience in Online Marketing, he now runs a number of successful websites, and occasionally shares his experience & knowledge on this blog.

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