3. What are the two primary rules or principles of the Bell-LaPadula security model? Also, what are the two rules of Biba? The two primary rules of the Bell-LaPadula security model is the Simple Security property and the *(star) Security Policy. The Simple Security property states that a subject cannot read anything at a higher level or “no read up”. The *(star) Security Policy states that a subject cannot write anything at a lower level or “no write down”. The two rules of Biba are the Simple Integrity Property and the *(star) Integrity Property. Simple Integrity Property states that a subject cannot read below it or “no read-down”. The *(star) Integrity Property states that a subject cannot modify anything at a higher integrity level or
