Zero Trust Implementation for Legacy Systems using Dynamic Microsegmentation, Role-Based Access Control (RBAC), and Attribute-Based Access Control (ABAC)

This paper, titled “Zero Trust Implementation for Legacy Systems using Dynamic Microsegmentation, Role-Based Access Control (RBAC), and Attribute-Based Access Control (ABAC),” addresses the critical cybersecurity challenges legacy systems pose. Legacy infrastructures, integral to numerous organizations, exhibit vulnerabilities due to obsolete security architectures. The paper proposes a novel approach by implementing a Zero Trust framework, incorporating dynamic microsegmentation, Role-Based Access Control (RBAC), and Attribute-Based Access Control (ABAC). The objective is to establish a resilient security posture that adapts to real-time network changes, user behaviour, and evolving threat landscapes. The paper encompasses a comprehensive literature review, prototype design, and critical evaluation. The technical artefact, a prototype, showcases the application of cutting-edge cybersecurity concepts tailored for legacy systems. Ethical considerations guide the responsible development and evaluation of the prototype. The paper's forward-looking approach, including recommendations for enhancements, positions it as a valuable contribution to advancing cybersecurity practices in legacy environments.