Description: Qube Access Control refers to the mechanisms implemented in virtualization systems that regulate who can access a qube, which is a virtualization unit within the operating system. This control is fundamental for maintaining security and privacy, as it allows for the segmentation of different work environments and applications, preventing a compromised qube from affecting others. Each qube can have specific access configurations, meaning users can define permissions and restrictions based on their needs. This includes the ability to allow or deny access to shared resources, such as files or devices, and manage communication between qubes. The architecture of such systems is based on the principle of security through isolation, where each qube operates independently, and Access Control is a key tool to ensure that this isolation is maintained. Additionally, the system allows for the creation of qubes with different trust levels, meaning users can have qubes for sensitive tasks and others for less critical activities, all under a robust and flexible access control framework.