1.1 Protection Mechanisms

Question 1

Layering

Answer 1

Defense in depth – or building multiple security systems on top of each other. If one control fails it will not lead to exposed resources if the security is layered.

Question 2

Why should layering be linear?

Answer 2

Because if they are parallel, a would be attack would not have to go through as many security checkpoints. It should be in order, a series configuration, of one security control to the next.

A mall, is a parallel system with many doors leading inside. A courthouse will have one point of entry followed by several checkpoints of security.

Question 3

Abstraction

Answer 3

Grouping similar elements into a collective and assigning them security controls