you must complete this discussion board using these textbook as primary reference https://pdf.k0nsl.org/C/Computer%20and%20Internet%…(Eric D.knaap(2014))and you must add reference to bellow Each point with page numbers from above textbook Example(knaap,2014, pg.no68)
For this discussion, read Guide to Increased Security in Industrial Control Systems Section B07-Create a multilayer defence (defence-in-depth) in industrial control systems 27 and then post your thoughts on the following topic:
Explain how using a layered approach to security is required to deal with todayâ€™s advanced threats.
- Define what you feel is using a layered approach to security as it applies to Industrial Control Systems
- Provide an example of how having two layers of defense might be able to thwart an attack that would have been successful with only one layer
- Explain how perimeter defense systems and interior defense systems can combine to create a layered approach