Business Email Compromise (BEC) Scams: How One Email Can Cost Your Business Thousands
It looks like a normal email.
A trusted vendor.
An ongoing conversation.
A simple request:
“Please use our updated payment information for the next invoice.”
Everything checks out—until the money is gone.
This is called a Business Email Compromise (BEC) scam, and it’s one of the most costly cyber threats facing businesses today.
What Is a BEC Scam?
A Business Email Compromise (BEC) is a type of fraud where scammers impersonate a trusted contact—like a vendor, employee, or partner—to trick businesses into sending money to the wrong account.
According to the FBI, BEC scams result in billions of dollars in losses each year, making them one of the most financially damaging forms of cybercrime.
How BEC Scams Work
BEC scams are targeted, not random. Here’s how they typically unfold:
1. Monitoring or Account Access
Scammers gain access to—or closely observe—email conversations. They learn:
- Who handles payments
- Which vendors are used
- When invoices are due
2. Perfect Timing
They strike when:
- A payment is expected
- A large invoice is due
- A project is active
3. Email Impersonation
Instead of starting a new thread, scammers:
- Reply within existing email chains
- Mimic tone, language, and formatting
- Use nearly identical email addresses
4. Payment Redirect
They change just one thing:
- Banking or wire instructions
The rest looks completely legitimate.
Why These Scams Work
BEC scams are effective because they:
- Come from trusted-looking sources
- Blend into normal business operations
- Avoid obvious urgency or pressure
- Rely on routine—not suspicion
Even experienced teams can be targeted.
Red Flags to Watch For
Train your team to spot these warning signs:
🚩Requests to change payment or wire instructions
🚩New banking details for existing vendors
🚩Slight changes in email addresses (even one character)
🚩Messages asking to “process quickly” or avoid delays
🚩Payment updates tied to active or expected invoices
How to Protect Your Business
Strong internal controls can stop most BEC scams before money is sent:
Always Verify Payment Changes
Confirm any changes using a known, trusted phone number—not the email request.
Require Dual Approval
Use two-person approval for:
- Wire transfers
- ACH changes
- Large payments
Secure Your Email Systems
- Enable multi-factor authentication (MFA)
- Monitor for suspicious login activity
Train Your Employees
Your team is your first line of defense. Make sure they:
- Recognize BEC scams
- Understand how realistic they look
- Know verification is required—not optional
What to Do If a Fraud Occurs
If your business sends a fraudulent payment:
Act immediately:
- Contact your bank to request a wire recall
- Report the incident to the Internet Crime Complaint Center (IC3)
- Document all communication and transaction details
Time is critical—quick action may help stop or recover funds.
Protect Your Business from Email Fraud
BEC scams don’t break in—they blend in.
They look like real emails, from real partners, at exactly the right time.
That’s why one simple step matters most:
If payment instructions change, verify before you send.
At Reliabank, we’re committed to helping your business stay secure, informed, and protected from evolving financial threats.
Sources
Federal Bureau of Investigation – Internet Crime Complaint Center (IC3) 2025 Annual Report – https://www.ic3.gov/Media/PDF/AnnualReport/2025_IC3Report.pdf
Internet Crime Complaint Center – Report Fraud & Learn About Scams – https://www.ic3.gov