![]() ![]() The attribute-based access control (ABAC) mechanism is a next generation authorization model that provides dynamic access control. Any user attempting to access data outside their scope is restricted. It uses the principle of least privilege (POLP) to assign privileges based on the needs of an individual's role in the organization. The RBAC model is the most widely used control mechanism, as it aligns with the role and needs of every individual in the organization. The lack of a central authority makes this model hard to manage, as the ACL of each file has to be checked in case of any discrepancy. Also, this model is the least restrictive, as the owner has complete control over their files. The owner sets policies that determine who is authorized to access the resource, which gives this model more flexibility and makes it perfect for small to medium-sized organizations. In a DAC model, the data owner decides who is eligible to access their data. While it provides a high level of protection, the MAC model is difficult to set up and use, which is why it is usually used along with other access models like discretionary access control (DAC). ![]() The MAC model provides a high level of data protection and is used by government agencies to secure highly classified information. The access to resources is based on the privileges that the user possesses. The administrator classifies system resources and users based on their risk level and access requirements. This access model makes use of a central authority to assign access rights to all employees. There are four types of access control systems set apart by how the permissions are assigned to users. Organizations have to select a data access control policy that will best meet their requirements. ![]() It involves leveraging the principle of least privilege (POLP), i.e., managing employees' access rights based on their roles in the organization, and defining and limiting what data they have access to. Data access control is a technique used to regulate employees access to files in an organization. ![]()
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