Information Security Models Pdf //top\\ [FAST]

: "No Read Down" – a subject cannot read data at a lower integrity level to avoid being "tainted" by low-quality info. -Integrity Axiom

Ensures that actions at a high security level do not affect the system's state at a lower level. 3. Access Control Models Information Security Models Pdf

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If Bell-LaPadula is about "no leaks," Biba is about "no contamination." Developed by Ken Biba in 1977, this model is the inverted version of Bell-LaPadula, focusing strictly on data integrity. Key Rules: : "No Read Down" – a subject cannot

: Ensuring that sensitive information is only accessible to authorized users. Tools like encryption and access control lists (ACLs) are commonly used to uphold this principle. Information Security Models Pdf