Deploying custom policies in MDO

Let us look at how to deploy our own custom policies in MDO because, as stated in the Preset security policies section, these might not fit your needs as they provide very limited options for customization:

1. Start by navigating to the Microsoft 365 Defender portal at https://security.microsoft.com.
2. On the left-hand side of the screen, navigate to Email & collaboration | Policies & rules:

Figure 15.5 – Accessing the settings for Policies & rules in the Microsoft 365 Defender portal

3. Click on the section named Threat policies:

Figure 15.6 – Accessing Threat policies

4. You could use the shorter way as well; the URL for these settings is https://security.microsoft.com/threatpolicy.
5. This is where all the policies we talked about in the Preset security policies section and all the settings for Safe Links, Safe Attachments, and impersonation...