Azure Sentinel is a cloud-native security
information and event management (SIEM) solution offered by Microsoft Azure. It
provides intelligent security analytics and threat intelligence across the
enterprise, helping organizations detect, investigate, and respond to security
threats quickly and effectively. Here are some key features and benefits of
Azure Sentinel:
- Cloud-native: Azure
Sentinel is a cloud-native solution built on Azure, which means it can
easily scale with your organization’s needs and integrate with other Azure
services.
- Intelligent
security analytics: Azure Sentinel uses machine learning and
artificial intelligence to analyze security data from various sources,
including logs, telemetry, and other security tools. This helps identify
potential threats and detect anomalies in real-time.
- Threat
intelligence: Azure Sentinel provides access to a vast collection
of threat intelligence, including Microsoft’s global threat intelligence,
to help identify and respond to known threats.
- Customization: Azure
Sentinel allows you to customize the solution to fit your organization’s
unique security requirements. You can create custom detection rules, build
custom dashboards, and integrate with other security tools and services.
- Automation
and orchestration: Azure Sentinel enables the automation and
orchestration of security tasks, reducing the manual effort required for
security operations. This helps improve efficiency and reduce response
times to security incidents.
- Integration
with other security tools: Azure Sentinel integrates with a wide
range of security tools and services, including Microsoft and third-party
solutions, to provide a comprehensive security solution for your
organization.
Let’s take a look at how to use it. In the Azure portal, we
can get to Azure Sentinel by searching for it in the search bar.
But before we can use it, we need to add it to an Azure Log
Analytics Workspace. Currently, we don’t have one yet as shown below:
To create a workspace, we will first need to give the
workspace a name and we’ll select an existing resource group. We’ll also change
the location of the workspace.
This will create a workspace for us and now we need to Add
Azure Sentinel.
The below image shows the Azure Sentinel dashboard. It
can collect data from many sources and analyze that for
security incidents and threats. It provides tools to investigate the
data, create alerts, and mitigate security threats.
Let’s start by connecting a data source. There are many data
sources to connect to out of the box. Microsoft data sources and for party ones
like Amazon Web Services. Let’s connect our Active Directory.
Connecting it is really simple, we just need to click both
the Connect buttons and it is done.
So now as Azure Sentinel has access to data from Azure
Active Directory. After a while, you’ll see that there are more events here and
maybe some incidents, although there aren’t any yet for our current
subscription.
We can visualize the data in dashboards. Here, we can choose
out of many pre-built dashboards, like this Azure Active Directory
Audit Logs dashboard. Let’s install that and let’s take a look at it.
This shows all sorts of interesting graphs about ourAzure
Active Directory activity.
You can use tools like dashboards to gain more insights into
your security data. Azure Sentinel provides more tools to analyze data and
identify security incidents. You can hunt for them with queries as shown below:
You can also use Azure notebooks to mangle the data and
identify threats.
You can also set up alerts for certain events and
incidents. This helps you to act quickly if something happens.
You can also automate your mitigation response with
playbooks. Playbooks are Azure Logic Apps that contain a workflow to do
something based on security information. Playbooks have options like sending an
e-mail when there is a new recommendation in Azure Security Center.
Application and infrastructure security is extremely
important to get right. Azure Sentinel provides a threat detection and
mitigation service, it helps you to detect incidents and threats when they
happen and helps you to solve them as effectively as possible.
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