Which of the following access control models are used in the commercial sector? Each correct answer represents a complete solution.
Choose two.
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A. B. C. D.Clark-Wilson security model provides a foundation for specifying and analyzing an integrity policy for a computing system.
Answer: D is incorrect.
The Bell-
The Biba and Clark-Wilson access control models are used in the commercial sector.
The Biba model is a formal state transition system of computer security policy that describes a set of access control rules designed to ensure data integrity.
Data and subjects are grouped into ordered levels of integrity.
The model is designed so that subjects may not corrupt data in a level ranked higher than the subject, or be corrupted by data from a lower level than the subject.
The.
Access control models are used to determine who has access to which resources in a system, based on a set of predefined rules. These models are important in the commercial sector to ensure that sensitive data and resources are protected from unauthorized access.
The four primary access control models are:
A. Biba model: The Biba model is a confidentiality model that is designed to prevent data from being modified by unauthorized users. This model works by establishing a hierarchy of data, where data at a higher level can only be modified by users with a higher level of clearance. The Biba model is not commonly used in the commercial sector, as it does not provide a way to enforce data integrity.
B. Clark-Biba model: The Clark-Biba model is a combination of the Clark-Wilson and Biba models. It is used to enforce both confidentiality and integrity in a system. This model works by establishing a hierarchy of users, where users at a higher level can only access data at a lower level if they have a valid reason to do so. The Clark-Biba model is not commonly used in the commercial sector.
C. Clark-Wilson model: The Clark-Wilson model is an integrity model that is designed to ensure the accuracy and consistency of data. This model works by separating the duties of users into two categories: those who can modify data (called "transactors") and those who can only view data (called "validators"). The Clark-Wilson model is commonly used in the commercial sector, particularly in financial and healthcare industries.
D. Bell-LaPadula model: The Bell-LaPadula model is a confidentiality model that is designed to prevent unauthorized users from accessing sensitive data. This model works by establishing a set of rules that determine which users can access certain resources based on their security clearance. The Bell-LaPadula model is commonly used in the commercial sector, particularly in government and military organizations.
In conclusion, the two access control models commonly used in the commercial sector are the Clark-Wilson model and the Bell-LaPadula model. The Clark-Wilson model is used to enforce data integrity, while the Bell-LaPadula model is used to enforce data confidentiality.