Network Attack and Defense Modeling and System Security Analysis: A Novel Approach Using Stochastic Evolutionary Game Petri Net

Table 2

The meaning of place and transition.

Place	Meaning	Transition	Meaning
	The normal state of the system		Vulnerability scan of network system
	The vulnerability of the web server was discovered		Obtain user login information
	Get normal operation permission		Enhance the operating permission
	Get root operation authority		Install sniffer software to invade the host
	Implant sniffer		Steal system confidential data resources
	System confidential data resources was stolen		IDS_scan
	Admin_know		Blockade_IP
	Attack_terminated		Remove_sniffer
	Sniffer_removed		Return