Which of the following security models deal only with integrity?
Each correct answer represents a complete solution. Choose two.

A.
Biba-Wilson

B.
Clark-Wilson

C.
Bell-LaPadula

D.
Biba

Explanation:
The following security models deal only with integrity:
1.Biba
2.Clark-Wilson
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.
Answer option C is incorrect. The Bell-LaPadula security model deals only with confidentiality.
Answer option A is incorrect. There is no such security model as Biba-Wilson.
“http://en.wikipedia.org/wiki/Clark-Wilson_model”