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· df00tech

Detecting Business Email Compromise: Malicious Inbox Rules, Auto-Forwarding, and Mailbox Delegation (T1114.003, T1564.008, T1098.002) with KQL and SPL

Production-ready KQL and SPL detections for the mailbox-layer tradecraft behind business email compromise: malicious inbox rules, external auto-forwarding, delegate permission grants, and mass mailbox access. Includes tuning guidance, correlation logic, and a triage checklist for SOC teams.

Detection Engineering KQL Microsoft Sentinel Splunk

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