Four Invoices, $445,000, One Spoofed Vendor
What Happened
In 2024, attackers impersonated a vendor working on the Town of Arlington, Massachusetts high school building project. Using phishing, spoofed email, and a compromised account, they inserted themselves into the payment process and supplied new wiring instructions. Four monthly payments totaling $445,945 went to the criminals before the real vendor reported, in February, that it had never been paid. Investigators later found additional interception attempts on the same project totaling roughly $5 million. The town’s bank was able to recover just $3,308, about six percent of the loss.
Where It Went Wrong
Construction runs on large progress payments wired between owners, contractors, and suppliers, often with changing details across a long project. When a request to change banking information arrives by email and no one verifies it through a separate, trusted channel, a convincing fake is all it takes to redirect six figures.
How Red Door Shield Stops This
Keep what's valuable secure
Multi-factor authentication on email shuts down the account takeovers that let attackers hijack a real invoice thread in the first place.
Inspect what's coming in
AI-driven email security flags spoofed senders and anomalous financial requests, quarantining a fake wire instruction before accounting ever sees it.
Trust through validation
Verified, out-of-band payment workflows make confirming a banking change by a second channel a standard step, not an afterthought, plus staff training on the exact social-engineering tactics used here.
The Takeaway
This was not a sophisticated hack of a bank. It was a believable email and a missing verification step. The protection that stops it is process plus monitoring, and it costs a fraction of a single redirected payment.
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