Disable Defender for Cloud Apps alerts

[VolkerRacho]

Hi all, 

we just enabled Defender for Cloud Apps in our environment (about 500 clients). 

We started with setting about 300 apps to "Unsanctioned".

Now we get flooded with alerts. Mainly "Connection to a custom network indicator on one endpoint" and "Multi-stage incident on multiple endpoints" when an URL is blocked on more clients.

Is there a possibility to disable the alerts for this kind of blocks?

I tried creating a supression rules, but didnt manage to get it working. Dont know if it is not possible or if I made a mistake.

As the Defender for Cloud Apps just creates a Indicator for every app i want to block I could click every single Indicator and disable the alert there. But thats a few hundred Indicators and we plan to extend the usage.

Can I centrally disable alerts for custom indicators?

Thanks & Cheers

[#2]

Hi @VolkerRacho,

Here are steps to disable these alerts:

1. For a tenant-wide disable, navigate to MDE > Defender for Cloud Apps > Discovery > Discovered Apps and set the specific app to "Sanctioned".

2. To disable alerts for a specific Device Group, go back to the MDE > Defender for Cloud Apps > Discovery > Discovered Apps section, set the app to "Unsanctioned," and when the "Tag as unsanctioned?" dialog box appears, select the specific Device Group.

help.redcanary.com
Manage security alerts - Microsoft Defender for Cloud | Microsoft Learn
Control cloud apps with policies - Microsoft Defender for Cloud Apps | Microsoft Learn

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[#3]

@LeonPavesic 

Changing the sanctioned status of an app edits if the app is blocked or not. I think OP wants to keep the app unsanctioned/blocked, but does not want to get alerted on every occasion where a user visits the URL.