A Trust Score calculation approach for Zero Trust Access System

Zero trust is a cybersecurity approach that focuses on cautious and continuous verification. Traditional trust presumptions are discarded in a zero trust scenario, and continual verification becomes necessary. This paper introduces a weighted average-based trust evaluation method specifically designed for zero trust environments. The approach incorporates multiple factors and assigns appropriate weights to these factors and calculates a trust score. A user or device is allowed access to a resource only if the calculated trust score is above a predefined threshold value. This method guarantees a comprehensive assessment of users and devices prior to granting them access to sensitive resources, and any weaknesses will result in a decrease in their trust score. The weighted average technique enables organizations to customize the trust evaluation process to their specific zero trust requirements through its capacity for openness, adaptability, and customization. The methodology offers a useful and effective way to evaluate trust in a dynamic and constantly changing security environment.