Chapter 10: Threat Hunting

In the previous chapters, we looked at gathering security-related information from the ICS environment and how to store it so that we can query, correlate, visualize, and manipulate with and around that information. Now that we have the tools in place, let's look at a very specific usage of those tools and the security-related information we collected by performing threat hunting.

In this chapter, we will discuss the ins and outs of threat hunting and how it can be used in the ICS environment to prove or disprove that there are malicious actors present, or that malicious activity is taking place. As part of this introductory chapter to threat hunting, we will look at the principles of threat hunting activities and the tools that are used as part of threat hunting exercises. One toolset we will look at in particular and use extensively throughout this part of this book is called Elasticsearch, Logstash, and Kibana (ELK). We discussed the technical...