Question

A defense contractor deploys a multilevel security system enforcing the Bell-LaPadula model. An analyst holding a Secret clearance is logged in at the Secret level and attempts to save a newly authored file classified as Confidential into a Confidential-level repository. According to the model's rules, how should the system respond to this action?

Accepted Answer

Deny the write, because the star property (*-property) prohibits writing to a lower classification level

Answer

Allow the write, because the simple security property permits reading down to Confidential

Answer

Allow the write, because the analyst's clearance dominates the object's classification

Answer

Deny the write, because the strong tranquility property forbids changing an object's label after creation