Defender for SQL on machines and Azure SQL
The two Defender for SQL plans in Defender for Cloud, what vulnerability assessment and Advanced Threat Protection give you on Azure SQL and on SQL Server on VMs or Arc, how the enhanced agent collects data, and how to enable, verify and troubleshoot both plans.
SPF, DKIM, DMARC, ARC and spoof intelligence
How Exchange Online Protection evaluates inbound and outbound mail authentication, composite authentication and its reason codes, DKIM signing for custom domains, honouring DMARC in anti-phishing policy, trusted ARC sealers and Enhanced Filtering for third-party gateways, and a staged plan to reach p=reject.