A Rising Threat Every Business Owner Needs To Take Seriously
Business email compromise, or BEC, is a scam where a criminal impersonates someone your company trusts, an executive, a vendor, a client, over email and convinces an employee to send money or sensitive data. No malware, no suspicious attachment, nothing for a spam filter to catch. Just a convincing message and a wire transfer that leaves before anyone questions it.
The numbers explain why it deserves your attention. BEC scams caused $6.7 billion in global losses in 2023, the average loss per attack exceeds $137,000, and Perception Point measured a 42 percent jump in BEC incidents in the first half of 2024 versus the year before. Recovered funds are rare. For a small business in Houston or DFW, one successful BEC attack can erase a year of profit in a single afternoon.
How Is BEC Different From Ordinary Phishing?
Ordinary phishing is a numbers game, one generic email blasted to thousands of inboxes. BEC is targeted. The attacker researches your company first: who owns it, who pays the bills, which vendors invoice you, how your people write. Then they craft one message aimed at one employee, timed for maximum pressure, end of quarter, the owner traveling, a real project mid-flight.
AI tools have removed the old tells. Grammar is clean, tone matches the person being impersonated, and details are pulled from LinkedIn and your own website. Some attacks go further and hijack a real mailbox, replying inside a genuine email thread with fraudulent payment instructions. That version fools even careful people, because every part of the conversation except the bank account number is authentic.
What Do These Scams Look Like in Practice?
Four patterns account for most of the damage:
- Fake invoices. A “vendor” emails an invoice that looks routine, with new banking details. Accounts payable processes it like the last twenty.
- Executive fraud. A message that appears to come from the owner or CFO pressures an employee to move money fast and keep it quiet.
- Compromised accounts. A real, hacked mailbox at your company or a partner’s sends requests that pass every authenticity check.
- Vendor impersonation. A lookalike domain, one letter off from a supplier you have paid for years, requests an updated payment method.
The common thread is that each one exploits trust and routine rather than technology. That is also why the defenses are mostly procedural.
Why Do Email Filters Miss BEC?
Because there is often nothing malicious to detect. No attachment, no bad link, just text asking a human to do something. Traditional filters look for known-bad indicators; a well-built BEC email contains none. Modern email security helps, tools that flag lookalike domains, first-time senders, and unusual requests, but the last line of defense is always the person reading the message. Your security has to account for that.
The Five Controls That Actually Stop BEC
- Verify money moves out-of-band. Any wire transfer, payment change, or vendor banking update gets confirmed by phone, using a number already on file, never one from the email. This single rule defeats most BEC attempts outright.
- Train the specific people attackers target. Accounts payable, office managers, and executive assistants need scenario-based training on these exact scams, not generic phishing slides. Make it safe to slow down an “urgent” request.
- Turn on multifactor authentication everywhere. MFA on email and financial accounts keeps a stolen password from becoming a hijacked mailbox, which is how the most convincing BEC variant starts. It is a standard piece of layered cybersecurity services.
- Harden and audit email. Advanced filtering, alerts on mail-forwarding rules, and immediate access removal for departed employees. Attackers love a forgotten mailbox with live credentials.
- Keep tested backups. BEC sometimes accompanies broader compromise, and working data backup and recovery is what turns a bad week into a recoverable one.
How Do You Know If You Are Already Exposed?
Most businesses cannot answer basic questions cold: does MFA cover every mailbox, could a payment leave without verbal confirmation, would anyone notice a forwarding rule quietly copying the owner’s inbox to an outside address? A cyber security risk assessment answers those specifically, and ongoing managed IT services keep the answers true as your team and vendors change.
One convincing email should not be able to cost you $137,000. Let’s make sure it can’t.