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Fraudulent Wire Transfers: What Businesses Need To Know

Fraudulent Wire Transfers: What Businesses Need To Know

Written by: Lizzie Danielson

Published: 9/2/2026

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According to the FBI’s 2024 Internet Crime Complaint Center (IC3) report, business email compromise (BEC) targets organizations that regularly perform wire transfers and is one of the most financially damaging internet crimes reported. In 2024 alone, BEC complaints reported to IC3 accounted for about $2.77 billion in adjusted losses worldwide. And once money moves, it's almost impossible to get back.

What makes BEC attacks so effective is that the requests look legitimate because the email accounts behind them often are. Understanding how attacks happen is the best way to prevent them. This article breaks down what wire fraud means for companies, why email security alone can't stop them once a threat actor compromises an account, and how to catch attacks before money ever leaves your organization.

Key Takeaways

  • Fraudulent wire transfers start with a compromised email: Many business wire transfer fraud schemes begin when a threat actor gains access to a legitimate email account, not a fake one.
  • Standard prevention has a blind spot: Email security tools don't flag messages from compromised accounts because there's nothing technically wrong with them.
  • Recovery is a race against time: Wire transfers are nearly impossible to reverse once processed, and the window to act is brief.
  • Stop it before it starts: Catching the compromised account before a fraudulent request happens is the only reliable way to stop wire transfer fraud.

What’s wire transfer fraud, & why are businesses prime targets?

During a wire transfer fraud event, threat actors trick a business into sending money directly to a different account than it would normally to pay a third party for goods or services. The message usually looks like a routine payment request, an invoice from a vendor, or a change to payroll or payment account details. Most businesses don't realize their mistake until the money is gone.

Businesses are prime targets for several reasons, but three stand out. First, wire transfers move fast, leaving a very narrow window to catch them before they clear. Second, the transactions tend to be large, making each successful attack highly profitable for threat actors. Finally, teams that handle payments and banking operations work under constant time pressure: Finance teams routinely process payments, making it easier for attackers to slip a fraudulent request through before anyone stops to question it.

Common wire transfer scams targeting businesses

Here are some of the most common examples of wire fraud targeting businesses today:

  • BEC executive impersonation: A threat actor gains access to a legitimate email account and uses it to impersonate a trusted executive (a technique commonly called pretexting). They instruct someone on the finance team to wire money immediately to a new or unfamiliar account, or to spend business money in unusual ways (such as buying a large amount of gift cards). Usually, threat actors frame the forged request as confidential or time-sensitive—a transaction that can’t go through normal channels or needs to bypass routine processes.
  • Vendor invoice fraud: A threat actor compromises (or imitates) a vendor's email account and sends a convincing invoice with updated banking details. Payment goes to an attacker-controlled account instead of the legitimate supplier. Sometimes, a threat actor may insert a new reply into an existing email message thread between the vendor and purchaser to boost the legitimacy of the message, in a technique known as thread hijacking.
  • Real estate closing scams: During a real estate transaction, a threat actor watches email communication between the buyer's agent and the title company. They send fake wire instructions at closing, redirecting funds to an account they control.
  • Payroll diversion: A threat actor impersonates an employee and contacts HR or payroll to change direct deposit details, routing the employee's next paycheck to a fraudulent account.

Why traditional wire transfer fraud prevention fails when email accounts are compromised

Most fraud prevention advice assumes the threat actor is an outsider. Verifying by phone, getting a second approver, and refusing to wire money based on an email alone are all good ways to prevent fraud.

But during an account-takeover-driven BEC attack, the email account is already compromised. The request comes from the real account, and standard email security tools don't flag it because the message is from a legitimate address with no malicious links or attachments.

By the time the fraudulent request arrives, the threat actor may have spent weeks inside the inbox. They learn communication patterns, track pending transactions, and time the request to match recipient expectations. Attackers also set up forwarding and auto-delete rules so replies never reach the real account owner, keeping themselves hidden until the money moves.

Can wire transfers be reversed? (The business reality)

In most cases, no. Once a bank processes a wire transfer, funds move quickly—typically within 24 hours—and banks have very limited ability to recall them. Unlike credit card payments, where chargebacks give businesses a formal dispute process, wire transfers carry no equivalent protection. Instead, they function like cash.

Recovery isn't impossible, but it's a race against time. The FBI's IC3 runs programs called the Domestic Financial Fraud Kill Chain (D-FFKC) and the International Financial Fraud Kill Chain. Both work with financial institutions to freeze fraudulent funds before they disappear.

In 2025, the D-FFKC program handled 3,574 incidents with losses of $832M. The program placed a monetary hold on $507M, representing a 61% success rate. But the timeframe for success is brief.

Once threat actors move funds to a secondary account (or convert them to cryptocurrency), the chance of recovery drops sharply. For most businesses, by the time the fraud surfaces, the money is already gone. If you suspect a fraudulent wire transfer, report it to your bank and file a complaint with IC3 immediately. Minutes count!

How to prevent wire transfer fraud at the source: Stopping email account compromise

The best wire transfer fraud protection starts with catching the account compromise early. That means tracking suspicious behavior inside your email environment in real time. When a threat actor gains access to an account, they leave behind signals, like a login from an unusual country minutes after a domestic login, an authentication attempt from a suspicious IP, or credential use at odd hours.

These are some early indicators that a BEC attack is already underway, and they show up before the fraudulent wire request ever lands in your finance team's inbox. Spotting them early may make the difference between stopping fraud before it happens and doing damage control after the money is already gone.

This is where traditional email security tools fall short. Spam filters and email gateways catch malicious messages, not malicious behavior inside of an account. Preventing wire transfer fraud at the source requires high-level visibility into activity within your email environment.

How Huntress Managed ITDR stops fraudulent wire transfers before money moves

Most wire transfer fraud starts the same way: A threat actor accesses a business email account, sets up inbox rules to hide their activity, and sends a fraudulent payment request. By the time anyone notices, the money is already gone.

Huntress Managed ITDR stops threat actors as soon as they gain access to an account. The AI-centric 24/7 Huntress Security Operations Center (SOC) watches Microsoft 365 and Google Workspace activity around the clock, looking for the signals that show an account has been taken over. When those signals appear, the Huntress SOC acts fast, investigating and responding to verified account takeovers with an average MTTR of about three minutes, based on independent UserEvidence surveys of Managed ITDR customers. That speed matters because wire fraud depends on attackers having time to operate inside a compromised account undetected. Cut that window, and the chances of fraud drop significantly.

That's exactly what happened when the Huntress SOC spotted a suspicious login from a Nigerian IP address on a U.S.-based logistics company's Microsoft 365 account. The SOC traced the activity, confirmed it was malicious, and found that threat actors had created inbox rules to intercept vendor communications. Their goal was to manipulate routing numbers and divert funds into accounts they controlled. Huntress SOC caught and contained the threat before a single fraudulent payment went out.

The value of preventing even a single high-value wire fraud incident can easily outweigh the cost of Managed ITDR, and the SOC support that comes with it requires nothing from your internal team.

The best time to stop wire transfer fraud is before it starts

Most organizations assume wire transfer fraud is a training problem; train employees to verify requests, confirm by phone, and question anything urgent. These are good habits, but they don't stop a threat actor who’s already inside an account. The only reliable fix is to catch the compromise early.

Huntress SOC watches your Microsoft 365 and Google Workspace environments around the clock. Our team spots the early signs of account compromise and responds in minutes, before a fraudulent payment request ever goes out.

Start a free trial of Huntress Managed ITDR today.

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