Allowing transferred staff to retain access from previous roles violates the principle of least privilege and increases the risk of inappropriate access. This creates a greater likelihood that internal fraud or unauthorized activities could occur without detection, as users may retain access to systems or data unrelated to their current responsibilities.

The Certification Practice Statement (CPS) is a detailed document issued by a certification authority that outlines the procedures for managing digital certificates, including how to handle compromised private keys. It defines operational and security practices within the PKI framework.

The best approach from a risk management perspective is a deployment plan based on sequenced phases. This allows for a more controlled and manageable rollout, with the opportunity to identify and address issues incrementally at each stage, reducing the risk of large- scale failure and ensuring smoother implementation.

https://ecampusontario.pressbooks.pub/auditinginformationsystems/chapter/0503/

In Agile development, frequent changes and updates are common. Regression testing is essential to verify that existing operational and security controls continue to function correctly after new changes are introduced, ensuring system stability and reliability throughout iterative development cycles.