The concept of zero trust in network security is based on the principle that no one, whether inside or outside the network, should be trusted by default. This approach necessitates continuous verification of every user and device attempting to access network resources. Implementing a zero trust model involves stringent access controls, multi-factor authentication, and regular monitoring of user behavior to detect anomalies. By adopting zero trust, organizations significantly reduce the risk of data breaches and ensure that sensitive information remains protected from unauthorized access.