Business email compromise defense for contractors.
Use this workflow when your team handles supplier invoice spoofing and subcontractor payment-change fraud. The goal is simple: pause, verify off-thread, inspect mailbox artifacts, document, then approve or escalate.
A subcontractor or supplier sends a new remittance account while a project is moving fast.
Attackers win when the business treats a payment change like a normal email. This page turns it into a repeatable approval system.
The four-part verification system.
Hold the invoice
Turn this into a written checkpoint before money leaves the business.
Verify with the vendor contact already in the accounting file
Turn this into a written checkpoint before money leaves the business.
Compare domain, reply-to, and previous invoice history
Turn this into a written checkpoint before money leaves the business.
Record the approval trail
Turn this into a written checkpoint before money leaves the business.
Signals that make the request high-risk.
Email mismatch
Display name, reply-to, domain spelling, invoice footer, or payment details do not match previous records.
Urgency pressure
The message pressures staff to bypass normal approval because of a deadline, angry vendor, or executive request.
Mailbox artifacts
Forwarding rules, filters, OAuth grants, new logins, deleted threads, or hidden replies suggest account compromise.
Related BEC resources.
Get the free payment-change verification checklist.
Send it to the person who approves invoices, ACH, wires, or vendor bank changes.
Want the workflow instead of another article?
Get the Business Email Compromise Defense Pack, request a free teardown, or download the checklist and capture the process for your team.
Add done-with-you setup.
If you want the first version adapted, tested, and documented, start with setup help.