Ensure That 'All users with the following roles' is set to 'Owner'

Description:

Enable security alert emails to subscription owners.

Rationale:

Enabling security alert emails to subscription owners ensures that they receive security alert emails from Microsoft. This ensures that they are aware of any potential security issues and can mitigate the risk in a timely fashion.

From Azure Console

1. Go to 'Microsoft Defender for Cloud'
2. Click on 'Environment Settings'
3. Click on the appropriate Management Group, Subscription, or Workspace
4. Click on 'Email notifications'
5. In the drop down of the 'All users with the following roles' field select 'Owner'
6. Click 'Save'

Using Azure Command Line Interface 2.0

Use the below command to set 'Send email also to subscription owners' to 'On'.

az account get-access-token --query "{subscription:subscription,accessToken:accessToken}" --out tsv | xargs -L1 bash -c 'curl -X PUT -H "Authorization: Bearer $1" -H "Content-Type: application/json" https://management.azure.com/subscriptions/$0/providers/Microsoft.Security/securityContacts/default1?api-version=2017-08-01-preview -d@"input.json"'

Where 'input.json' contains the Request body json data as mentioned below.
And replace 'validEmailAddress' with email ids csv for multiple.

{
"id": "/subscriptions//providers/Microsoft.Security/securityContacts/default1",
"name": "default1",
"type": "Microsoft.Security/securityContacts",
"properties": {
"email": "",
"alertNotifications": "On",
"alertsToAdmins": "On",
"notificationsByRole": "Owner"
}
}
.