Enterprise Security Architectures for Zero Trust
DOI:
https://doi.org/10.15662/IJRAI.2021.0406007Keywords:
Zero Trust Architecture, enterprise security, identity and access management, multi-factor authentication, micro-segmentation, continuous monitoring, policy-based access control, insider threats, cyber resilience, hybrid IT environmentsAbstract
Zero Trust Architecture is the new paradigm of enterprise security. This challenges the perimeter-based defense strategy. The older models, where trust was vested in the user or the device within the network boundary, are failing in an era where cloud computing is rapidly being adopted and remote work environments and mobile devices are gaining ground. Zero Trust works on the philosophy of "never trust, always verify," whereby every access request must be continually authenticated, authorized, and validated by dynamic policies before access is allowed to any resource. Such a methodology uses a series of critical technologies and procedures, like MFA, IAM, micro-segmentation, and continuous monitoring of user activity and device integrity. The goal is to reduce an attack surface, decrease the chances of lateral movement in networks, and increase visibility across all endpoints. Zero Trust Architecture (ZTA) does not just counter cyber threats from the outside but also mitigates insider threats, thereby ensuring compromised account credentials and devices will not allow insiders to gain unauthorized access to critical systems. For enterprises, embracing Zero Trust comes as a phased process, taking the form of policy formulation, technological upgrades, and cultural adaptation. While difficult, it includes higher complexity levels and initial expenses, but more significant long-term benefits are more significant in fighting modern cyber threats. Zero Trust helps organizations form a stronger security posture that delivers data protection amidst the increasingly decentralized and hybrid environment of IT systems. This paper explores the key components, benefits, and strategies for implementing ZTA and underscores its critical role in future-proof enterprise security frameworks.
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