What is the Biba security model concerned with?

A.
Confidentiality

B.
Reliability

C.
Availability

D.
Integrity

Explanation:
The Biba model was developed after the Bell-LaPadula model. It is a state machine model similar to the BellLaPadula model. Biba addresses the integrity of data within applications. The Bell-LaPadula model uses a
lattice of security levels (top secret, secret, sensitive, and so on). These security levels were developed mainly
to ensure that sensitive data were only available to authorized individuals. The Biba model is not concerned
with security levels and confidentiality, so it does not base access decisions upon this type of lattice. Instead,
the Biba model uses a lattice of integrity levels.
Incorrect Answers:
A: The Biba security model is not concerned with confidentiality; it is only concerned with integrity.
B: The Biba security model is not concerned with reliability; it is only concerned with integrity.
C: The Biba security model is not concerned with availability; it is only concerned with integrity.

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 372