Why must we know our current and future architecture before creating a System Security Plan?

Explain the relationship between software safety and cybersecurity. How can vulnerabilities in software pose safety risks, and what strategies can be employed to mitigate these risks in critical systems?

While designing a security strategy for our system, why is it so important to first grasp its current and prospective architecture?

Why is it necessary for us to be familiar with both our current and future architecture before we can create a system security plan?