According to the network
threat real-
time perception and collaborative protection method, device and
system and the electronic medium, the
network behavior characteristics are extracted to form the
industrial control system behavior model, the
network behavior mode of the industrial
system during normal operation can be deeply known, and therefore abnormity can be recognized more accurately. In the process of generating the security rules, multi-source information including security policies, alarm logs,
network behavior characteristics and the like is integrated, so that the security rules are more suitable for the actual situation of the industrial
control network, and the risk of misjudgment is reduced. And in the aspect of describing the security
threat portrait, not only can the basic
threat information be analyzed, but also the
risk level can be dynamically evaluated and the propagation path can be determined, so that a comprehensive and accurate basis is provided for subsequent targeted
processing. And the linkage disposal process realizes dynamic adjustment of countermeasures, division of linkage elements and setting of linkage conditions and disposal processes according to threat levels and paths, can quickly isolate
network security threat sources and block propagation paths of the
network security threat sources through
cooperative work of protection,
recovery and alarm sub-strategies, and carries out timely emergency
recovery on a
system influenced by threats, so that the safety of the system is improved. The
adverse effect of network threats on the
industrial control system is reduced to the maximum extent, and the continuity, stability and safety of industrial production are guaranteed.