In the Bell-LaPadula model, the Star-property is also called:

The correct answer is B. The confidentiality property. The Bell-LaPadula model was designed specifically to enforce confidentiality in multi-level security systems. The *-property (star property) states 'no write down' - a subject at a higher security level cannot write data to an object at a lower security level. This prevents…

Submitted by stefanr· Apr 18, 2026Access Controls

Question

Options

AThe simple security property
BThe confidentiality property
CThe confinement property
DThe tranquility property

How the community answered

(29 responses)

A
7% (2)
B
90% (26)
D
3% (1)

Explanation

The Bell-LaPadula model was designed specifically to enforce confidentiality in multi-level security systems. The *-property (star property) states 'no write down' - a subject at a higher security level cannot write data to an object at a lower security level. This prevents classified information from leaking to lower-clearance levels, directly enforcing confidentiality. The simple security property (A) covers 'no read up.' The tranquility property (D) relates to security labels not changing. Confinement (C) is more associated with the Biba or Clark-Wilson models.

Topics

#Bell-LaPadula model#Star-property#Confidentiality#Access Control Models

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