Investment Priority Analysis of ICS Information Security Resources in Smart Mobile IoT Network Environment Using the Analytic Hierarchy Process

Table 9

Implication of the AHP analysis result on the ICS in each layer.

Considerations	Layers	Operation layer	Control layer	Field device layer
Practical environments	Security aspect	A lot of user accesses that need to be identified for security	Various events of devices, systems, and networks that need to be handled for service continuity	Control end-point devices along with ethernet or the IoT network
	Risks	Social engineering attacks or user carelessness	Service abort or collapse availability	Manipulating command attack to end-point devices
Top priority for security resources investment	Hierarchy I	Security functions	Service continuity	Service continuity
	Hierarchy II	Identification; Authentication; Access control	Event response	Physical interface protection
Based on
TTAK.KO-12.0307 standard	Priority analysis			Analytic hierarchy process