网络信息安全是一个持续变化的博弈棋局。本文从南向（技术领域）和北向（观念和管理）两个方面，探究这个棋局的本质性结构。仿照医学的分科模式，将网络安全领域分解成多个子领域，并探究各子领域的内在规律和关键人群。

The area of cyber security is like a game of chess, whose fundamental construction is explored in this paper. The area is described through the southward view which is technic oriented and the northward view that is awareness and management oriented. Referring to the medical division pattern, the author divides the area of cyber security into several sub-areas, peeks into their internal rules, and digs into the group of people who play crucially influential roles in that sub-area. The author expects to offer a view of observing the whole landscape and provides several key points which can help to draw the outline of this area.