BEC Response

From the author

Business Email Compromise detection and first response: the signals that reveal it in CIPP/M365 audit logs, mailbox and forwarding rules, and connected email security vendor alerts; the order-dependent response sequence (session revocation, forwarding-rule audit, mailbox rule and delegate cleanup, password reset, MFA re-enrollment, lateral-spread check, recipient notification); and what a defensible incident timeline must capture for insurance or bank-fraud claims.