What is threat hunting?

In Chapter 6, Passive Security Monitoring, we discussed ways to detect, record, and identify security-related risks and information in our ICS environment without interacting with systems on the network. Then, in Chapter 7, Active Security Monitoring, we looked at the opposite of that methodology, namely using active techniques to unearth security-related information and find risk in the industrial network. Finally, in Chapter 9, Visualizing, Correlating, and Alerting, we took the findings and information from all our active and passive tools and activities, and then combined them into a Security Incident and Event Management solution. This provided us with a way to correlate and search for risks. It also allows us to set alerts on detected security incidents and visualize the current risk posture of our environment. Now, it is time to use the information and data our security monitoring efforts are giving us in a more proactive and investigative way, which...