After a breach in your organization resulted in the public release of top secret information, the company implemented a MAC which enforces no read-up, a MAC which enforces no write-down, and a DAC which uses an access matrix. What is the property that has been implemented with the no read-up MAC?
A. simple security property
B. star property
C. discretionary security property
D. strong star property
A
Explanation: The Bell–LaPadula model defines two mandatory access control (MAC) rules and one discretionary access control (DAC) rule with three security properties. The following properties have been implemented in this scenario:
• No read-up MAC = simple security property
• No write down MAC = star property
• DAC using an access control matrix = discretionary security property
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