1.Why is risk particularly high at system interfaces? Discuss some examples of invalid assumptions that one system may make about another system that could lead to a cybersecurity problem.

2. How are top-down and bottom-up design used in concert to design large enterprise security systems? Discuss how system engineering tools, such as architecture specification languages, can be used to support this hybrid design approach.

3. Why is cybersecurity dynamic in nature? Discuss how the dynamic nature of cybersecurity might manifest during system operation.