Answer:
In the explanation is a short point of view about the cyber defense and the perimeter oriented posture.
Step-by-step explanation:
To begin with, the concept known as "Cibersecurity" refers to the process of protection of computer systems and everything related to them like softwares, hardwares or any electronic data that could be harmful and sensitive for the company. The reason why this type of practice has been rising up the last years is due to the fact that the "internet of things" has been growing up as well and everyday the companies need to protect their information more and more. Moreover, the "perimeter-oriented" security posture implicates the focus on the external networks as being bad and on the other side the internal networks as being good and stable. So the reason why the companies should consider the cyber defense important is because they need to protect all the information that could be use against them.