Chapter summary

  • Subjects (active) use computers and programs to access (information flow) objects (passive repository of data). A trusted path must be established between the subject and the object.

  • Access controls are technical controls, administrative controls, or physical controls. Controls are driven by threats and are implemented to deter, delay, prevent, detect, assess, respond (correct, recover), compensate, or direct.

  • Controls of various types should be implemented in layers. Remember: Defense in depth.

  • AAA = authentication (something you know, something you have, and something you are), authorization, and accounting. (The third A is also auditing or accountability.)

  • Attacks on authentication include the brute force, the dictionary, the hybrid, ...

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