Summary

In this chapter, we introduced you to the concept of similarity analysis to help you with your pivoting and hunting journey. Specifically, we talked about the motivations for doing similarity analysis, introduced you to similarity groups, and then tried to introduce you to some discrete mathematics concepts but tried to go light on the math! After that, we identified several grouping tools that could be used to build your graphs before introducing you to hashing and fingerprinting tools. These tools can run algorithmic hash functions against a file-based payload or a network infrastructure to allow you to identify similarities between files or the uniqueness of an infrastructure target.

In the next chapter, we're going to move on to another phase of the intelligence cycle and focus on how to prepare, evaluate, and disseminate threat intelligence information.