Mandatory access control is based on what type of model?

Mandatory access control (MAC) is indeed based on a lattice-based model, which defines permissions based on a hierarchical system of classification and security labels. In this model, access to resources is regulated by the system rather than the individual user. Users are assigned labels that indicate their security clearance level, and objects (like files or resources) are also assigned security labels. The rules governing access are determined by the operating system or security policy, ensuring that users cannot grant or modify access to resources on their own.

In a lattice-based model, the security policies are set up to allow for control mechanisms that restrict how data can be shared, thus providing higher levels of security, particularly in environments that require strict regulatory compliance. This model is particularly effective in government and military applications where data classification is essential.

The other models mentioned have different mechanisms for access control. Role-based models categorize users based on their roles within an organization, while discretionary models allow users to control access to their own resources. Attribute-based models decide access based on various attributes of the user and the resource but do not enforce restrictions as strictly as mandatory control does.