Identifies the top 10 external sender addresses delivering inbound emails classified as spam. To exclude your own organization's domains (including subdomains), add a filter after the spam filter, e.g.: | where SenderFromAddress !contains ".yourdomain.com" (Replace "yourdomain.com" with your actual domain.) Based on Defender for Office 365 workbook: https://techcommunity.microsoft.com/blog/microsoftdefenderforoffice365blog/part-2-build-custom-email-security-reports-and-dashboards-with-workbooks-in-micr/4411303

0 exclusive techniques.This is coverage no other published rule has; it is not this rule's total technique count.