How Real-Time Validation Can Stop Business Email Compromise: A Practical Guide

Business email compromise (BEC) is one of the most costly forms of cybercrime. According to a Trustpair report published in January 2026, 71% of U.S. companies reported an increase in fraud attacks, and high-profile incidents such as the SitusAMC hack in November 2025 — which impacted major U.S. banks — show that even well-guarded organizations can be exploited. As attackers use AI to craft more convincing phishing messages and even deepfake audio or video to impersonate executives, traditional email security isn’t enough. Real-time validation is emerging as a practical, proactive defense.

What Happened

While the Trustpair and SecurityWeek articles do not detail every specific BEC campaign, the trend is clear. Attackers are no longer relying solely on fake invoices or spoofed sender addresses. They’re using compromised legitimate accounts, combining email with phone calls, and generating realistic text in real time. In the SitusAMC breach, the attackers gained access to third-party vendor systems, then used that foothold to send fraudulent payment requests to banks. The attack did not necessarily exploit a technical vulnerability — it exploited trust.

The J.P. Morgan articles referenced in the research outline how real-time validation fits into this landscape: instead of relying on a static email filter that checks only headers or known malware, real-time validation checks the actual identity of the sender and the details of the transaction at the moment the request arrives. It’s a shift from detection to prevention.

Why It Matters

Email filters have become good at catching known phishing links and malicious attachments. But BEC does not always contain malware. A request to change payment details, an urgent wire transfer instruction, or a fake bill from a “vendor” looks legitimate. By the time an employee realizes something is wrong, the money has already moved.

Real-time validation matters because it breaks the attacker’s main advantage: speed and impersonation. Instead of requiring a person to manually double-check an email address or call back a known number, an automated system cross-references the sender’s identity against a trusted directory, checks whether the payment instructions match existing patterns, and flags mismatches before anyone acts. This is especially relevant now that deepfake fraud is on the rise — a CEO’s voice can be cloned, making a phone verification less reliable than it used to be.

The approach works on both technical and human levels. It reduces the burden on employees to constantly question every request, and it adds a layer of automated verification that operates whether the user is alert or distracted.

What Readers Can Do

You do not need to buy a specific product to start using real-time validation principles in your organization. Here are concrete steps:

  1. Adopt payment verification workflows. For any invoice or payment change above a certain threshold, require a second approval that involves an out-of-band check. This can be as simple as a phone call to a pre-recorded number, but a more reliable method is to use a tool or platform that validates the request against a database of known vendor account numbers and contacts.

  2. Use email authentication technologies. Ensure SPF, DKIM, and DMARC are configured. These don’t stop all BEC (attackers can use legitimate sender domains if they compromise a mailbox), but they make it harder for outsiders to spoof your domain.

  3. Implement internal validation for high-risk requests. For changes to wire instructions, beneficiary details, or new vendor setup, require a separate submission through a secure portal rather than relying on email alone. Some businesses use a simple form that generates a ticket and a confirmation message — the employee can then call the requestor on a known number to confirm.

  4. Train employees to spot subtle signs. Real-time validation tools help, but humans still need to be skeptical of urgency, unusual language, or requests that bypass normal process. Run periodic simulations that test whether staff verify payment changes before acting.

  5. Monitor for behavioral anomalies. Some fraud systems analyze the timing and pattern of requests — for example, if a vendor who usually bills on the 15th suddenly requests payment on the 10th with a new account number. That’s a red flag. Even without a tool, you can set manual checks for such changes.

  6. Consider vendor validation services. Third-party services provide up-to-date lists of verified business identities and account details. When an invoice arrives, you can match the bank account number against the registered account for that vendor. This is the “real-time” part: the check happens before you wire the money.

Sources

  • Trustpair, “AI Fraud Outpaces Human Defenses as 71% of U.S. Companies Report Rise in Attacks,” January 2026.
  • SecurityWeek, “Major US Banks Impacted by SitusAMC Hack,” November 2025.
  • J.P. Morgan, “How Real-Time Validation Stops Business Email Compromise,” June 2026.
  • J.P. Morgan, “Account Takeover Prevention: Behavioral Monitoring for Payments,” June 2026.
  • J.P. Morgan, “Fighting AI With AI: Smarter E-Commerce Fraud Prevention,” June 2026.
  • J.P. Morgan, “How To Defend Against Deepfake Fraud in Payments,” June 2026.

Real-time validation is not a silver bullet, but it is a practical step that addresses the core weakness in BEC attacks: the gap between a fraudulent request and a human’s ability to verify it. By closing that gap, you give your business a stronger defense against one of the most expensive types of fraud.