In today's contemporary businesses, there are an everincreasing number of users, devices, and programs; in addition, there is an ever-increasing flood of data; the majority of this data is either sensitive or secret, which contributes to the ever-increasing relevance of cyber security. The challenge is made much more complicated by the proliferation of cybercriminals and the increasing complexity of their methods of attack. What constitutes the many aspects of cyber security, and how does it really function? The area of cyber security may be divided into a number of distinct subfields, the coordination of which is essential to the effectiveness of a cyber-security program inside an enterprise. The following items are included in these sections: