10 Questions
What is the role of the Reference Monitor in computer system security?
It mediates all access requests to computer resources
What is the TCB in computer systems?
A part of computer systems that provides core security functions
What are principles in the context of computer system security?
Users or entities that make decisions about making system access requests as if they were users
What do subjects represent in the context of computer system security?
The active OS processes that act on behalf of principles
Where can a reference monitor be placed in an operating system?
In the OS kernel
What is the purpose of the reference monitor?
To establish the validity of an access request and make an access decision
What does the trusted computing base (TCB) control access to?
Computing resources
What are some common placements of the reference monitor?
Stack, sandboxed, embedded
What must the trusted computing base (TCB) actively prevent?
Misuse of the OS and external actors
What are some responsibilities of the trusted computing base (TCB)?
Isolation of objects and memory protection
Explore the fundamental concepts of computer system security including the Reference Monitor and Trusted Computing Base (TCB). Learn about the abstract access control concept of the Reference Monitor and the core security functions provided by TCB.
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