What are the Main Tenets of Zero-Trust Security?

Enterprise Security Magazine | Thursday, September 09, 2021

Microsegmentation is the process of breaking security perimeters into small zones so that several areas of the network can have independent access.

FREMONT, CA: Zero trust security is an IT security approach that involves tight identity verification for everyone who wants to access resources on a private network, whether inside or outside the network perimeter. Although zero-trust network access is the most commonly identified technology with zero trust architecture, it is a holistic approach to network security that encompasses various ideas and technologies.

The key principles of zero-trust security are as below:

Validation and Continuous Monitoring

A zero-trust network is based on the assumption that there are attackers both inside and outside the network; hence no users or machines should be trusted automatically. User identification and privileges and device identity and security are all verified by zero-trust. Once established, logins and connections time out, requiring users and devices to be re-verified regularly.

Least Privilege                      

Least-privilege access is another zero-trust security principle. This entails granting users only the level of access they require, similar to an army general providing information to soldiers on a need-to-know basis. This reduces each user's exposure to network critical areas. Implementing least privilege includes critical managing of user permissions. Because entering into a Virtual Private Network (VPN) allows a user access to the entire connected network, VPNs are not well-suited for least-privilege approaches to authorization.

Device Access Control

In addition to human access constraints, zero-trust necessitates rigorous device access controls. Zero trust systems must keep track of how many devices are attempting to connect to their network, verify that each one is authorized, and examine all devices to guarantee they are not compromised. This reduces the network's attack surface even more.

Microsegmentation

Microsegmentation is also used in zero-trust networks. Microsegmentation is the process of breaking security perimeters into small zones so that several areas of the network can have independent access. A network with files in a single data center that uses microsegmentation, for example, could have dozens of different, secure zones. Without special authorization, a person or program with access to one of those zones will not be able to access any of the others.

See Also: Top Cloud Security Solution Companies