The foundation of zero trust security is the idea that nothing within or beyond an organization's boundaries should be taken for granted. 

It takes the "never trust, always verify" stance in its place, demanding constant authorization and authentication from any user, device, or application trying to access resources.

1.Identity Verification: Authentication techniques like biometric and multi-factor authentication (MFA) make sure that only people with permission are able to access vital resources.

2.Micro-Segmentation: By breaking up networks into smaller sections, threats are unable to move laterally and the possible consequences of a breach are reduced.

3.Least Privilege Access: This technique minimises the attack surface and lowers the possibility of insider threats by granting users only the minimal amount of access necessary to do their tasks.

4.Constant Monitoring: Quick identification and action in response to questionable activity or abnormalities are made possible by real-time network traffic analysis and monitoring.