Scholarlink

Traditional perimeter-based security models are increasingly becoming ineffective against modern cyber threats, especially in cloud, IoT, and hybrid environments. This study conducts a systematic literature review (SLR) following PRISMA guidelines, analysing 23 peer-reviewed articles published between 2021 and 2025 from SpringerLink, ACM, IEEE Xplore, and ScienceDirect. The results show that Zero Trust Architecture (ZTA) strengthens cybersecurity by eliminating implicit trust, enabling continuous authentication, and enforcing least-privilege access controls across enterprise, IoT, cloud, and healthcare networks. Key opportunities include granular access control, blockchain-based identity authentication, and AI/ML-driven automated trust assessment. However, there are notable barriers, complexity of implementation (reported in 74% of the studies), issues with the integration of legacy systems (65%), and a lack of policy standardization (52%). Future research directions emphasize dynamic trust models, integration of 5G/6G technology, and advanced governance frameworks. These results guide policymakers and organizations in adopting ZTA effectively while overcoming technical, organizational, and regulatory barriers.

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Zero Trust Architecture: Redefining Security in the Digital World

  • 会议论文

  • 发表日期：

    2026年

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  • Andile Dube,
  • Banele Mpande,
  • Fadzai Dzehonye,
  • Tiese Chazuza,
  • Belinda Ndlovu

摘要

Traditional perimeter-based security models are increasingly becoming ineffective against modern cyber threats, especially in cloud, IoT, and hybrid environments. This study conducts a systematic literature review (SLR) following PRISMA guidelines, analysing 23 peer-reviewed articles published between 2021 and 2025 from SpringerLink, ACM, IEEE Xplore, and ScienceDirect. The results show that Zero Trust Architecture (ZTA) strengthens cybersecurity by eliminating implicit trust, enabling continuous authentication, and enforcing least-privilege access controls across enterprise, IoT, cloud, and healthcare networks. Key opportunities include granular access control, blockchain-based identity authentication, and AI/ML-driven automated trust assessment. However, there are notable barriers, complexity of implementation (reported in 74% of the studies), issues with the integration of legacy systems (65%), and a lack of policy standardization (52%). Future research directions emphasize dynamic trust models, integration of 5G/6G technology, and advanced governance frameworks. These results guide policymakers and organizations in adopting ZTA effectively while overcoming technical, organizational, and regulatory barriers.