Microsoft 365 Business Email Compromise Checklist
Know what to check first when a suspicious invoice, vendor payment change, or possible Microsoft 365 mailbox compromise hits your business.
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When Something Feels Off, Know What to Check
Business Email Compromise attacks can start with a fake invoice, a request to change payment details, or a compromised Microsoft 365 account. These attacks are designed to trick people, bypass normal controls, and lead to financial loss and business disruption.
This Checklist Helps You
Take the right first steps in the first hour- Review Microsoft 365 account activity
- Check inbox rules and forwarding
- Verify vendor and payment change requests
- Strengthen authentication and security
- Know what not to overlook
- Know when and how to escalate
Who It’s For
Business owners
Office managers
IT managers
Operations leaders
Finance and accounting managers
Small and mid-sized businesses using Microsoft 365
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