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Business Systems House 2026
Enterprise Mail Flow Rules & Executive Anti-Spoofing Filters
Exchange Online Transport Rules Anti-Spoofing Defender for Office 365 PowerShell
Enterprise Mail Flow Rules & Executive Anti-Spoofing Filters
Architected custom email transport rules in M365 to neutralize Business Email Compromise (BEC) and executive impersonation attacks.
Key Features & Implementation
- Executive Name Impersonation Rules: Created transport rules rejecting external emails containing C-suite executive display names in sender headers.
- External Email Caution Banners: Prepended dynamic HTML caution banners to all external incoming emails warning users of external origin.
- Auto-Forwarding Block Policies: Blocked user-created SMTP auto-forwarding rules to prevent covert email data exfiltration.