Book Image

Learn Azure Sentinel

By : Richard Diver, Gary Bushey
Book Image

Learn Azure Sentinel

By: Richard Diver, Gary Bushey

Overview of this book

Azure Sentinel is a Security Information and Event Management (SIEM) tool developed by Microsoft to integrate cloud security and artificial intelligence (AI). Azure Sentinel not only helps clients identify security issues in their environment, but also uses automation to help resolve these issues. With this book, you’ll implement Azure Sentinel and understand how it can help find security incidents in your environment with integrated artificial intelligence, threat analysis, and built-in and community-driven logic. This book starts with an introduction to Azure Sentinel and Log Analytics. You’ll get to grips with data collection and management, before learning how to create effective Azure Sentinel queries to detect anomalous behaviors and patterns of activity. As you make progress, you’ll understand how to develop solutions that automate the responses required to handle security incidents. Finally, you’ll grasp the latest developments in security, discover techniques to enhance your cloud security architecture, and explore how you can contribute to the security community. By the end of this book, you’ll have learned how to implement Azure Sentinel to fit your needs and be able to protect your environment from cyber threats and other security issues.
Table of Contents (22 chapters)
1
Section 1: Design and Implementation
4
Section 2: Data Connectors, Management, and Queries
9
Section 3: Security Threat Hunting
14
Section 4: Integration and Automation
17
Section 5: Operational Guidance

Writing a query

Now that you have seen how to use the Logs page in Azure Sentinel, it's time to use your new skills to write your own queries. No matter what the query is, there are a few basic steps you will take to create your query:

  1. Have an idea of what information you are looking for. Do you need to know which computers are currently active? What actions a user performed in SharePoint? What data has been ingested? This will give you an idea of what log(s) you will need to look at. Look at Chapter 10, Threat Hunting in Azure Sentinel, for information on one way to keep track of this data.
  2. Once you have an idea of which log you want to look at, the next step is to look at a small number of rows in that log to get a better understanding of the data that is stored in the log.

    One of the easiest ways to do this is to find the log in the Tables pane and click on the eye icon to the right of the name. This will create a new KQL code window that will return up to 50 rows...