Remediation

From Azure Portal

1. From Azure Home select the Portal Menu.
2. Select Microsoft Defender for Cloud.
3. Under Management, select Environment Settings.
4. Click on the appropriate Management Group, Subscription, or Workspace.
5. Click on Email notifications.
6. Enter a valid security contact email address (or multiple addresses separated by commas) in the Additional email addresses field.
7. Click Save.

From Azure CLI

Use the below command to set Security contact emails 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/default?api-version=2020-01-01-preview -d@"input.json"'

Where input.json contains the data below, replacing validEmailAddress with a single email address or multiple comma-separated email addresses:

{ 
    "id": "/subscriptions/<Your_Subscription_Id>/providers/Microsoft.Security/securityContacts/default", 
    "name": "default", 
    "type": "Microsoft.Security/securityContacts", 
    "properties": { 
        "email": "<validEmailAddress>", 
        "alertNotifications": "On", 
        "alertsToAdmins": "On" 
    } 
}