Security Information and Event Management – SIEM
We briefly talked about SIEM systems in Chapter 5, Introduction to Security Monitoring. Now, it is time to get more familiar with the technology that we will be using extensively throughout the third part of this book, Threat Hunting.
What is a SIEM solution?
SIEM systems give security professionals insight into the activities and events within their Information Technology and Operational Technology (IT/OT) environment and keep a historical record of these activities and events.
The concept of SIEM has been around for over a decade. It initially evolved in the IT log management discipline and combines two technologies: Security Event Management (SEM) (whose function is to analyze incoming logs and event data in real time, which allows on-the-fly threat monitoring, event correlation, and incident response actions) and Security Information Management (SIM), which aims to collect, analyze, and report on the log data.
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