Question

‍When a trusted subject violates the start property of Bell-Lapadula in order to write an object into a lower level, what valid operation could be taking place?

Answer 1

Declassification

Step-by-step explanation:

Declassification is simply a process where a classified information, document or secret becomes no longer restricted. A Bell-Lapadula model has three major security properties; Simple Security, Star, and Discretionary Security. The first one is that a subject at any level of security may never read an object as long as it is at a higher level of security; The star property does not allow a subject, regardless of the security level, to write to any object at the lower level of security. If this must be done, a process known as declassification has occurred.