Business Email Compromise (BEC) fraud is one of the fastest growing threats for corporate treasury and accounts payable teams. Fraudsters manipulate supplier invoices and change bank details, causing payments to be sent to incorrect accounts. 

Without supplier bank details verification, companies risk sending payments to wrong IBANs — often with little chance of recovery. 

The Real Problem: Incorrect Supplier Bank Details 

Treasury and AP teams frequently face situations where: 

• supplier invoices contain incorrect bank details 

• vendor bank account changes are not verified 

• payments are returned due to invalid IBAN 

• payments are sent to fraudulent supplier accounts 

• manual checks fail to detect manipulated data 

These issues lead to: 

• returned payments 

• delayed supplier payments 

• financial losses 

• fraud exposure 

• operational overhead 

This is why vendor bank account validation before payment execution becomes critical. 

Why Traditional Controls Are Not Enough 

Many companies still rely on: 

• manual callbacks 

• email confirmations 

• supplier master data checks 

• four-eye principle 

However, these methods do not reliably prevent payment diversion fraud. Fraudsters often intercept communication and manipulate supplier bank details during invoice processing. 

Without automated IBAN verification for suppliers, treasury teams remain exposed. 

How Supplier Bank Details Verification Prevents BEC Fraud 

Automated verification before payment execution helps to: 

• validate supplier bank accounts 

• detect mismatches between IBAN and beneficiary name 

• prevent payments to wrong suppliers 

• identify suspicious bank detail changes 

• reduce returned payments 

This allows treasury teams to verify supplier bank details before payment and stop fraudulent transactions early. 

Typical Risk Scenario 

1. Fraudster sends modified supplier invoice 
2. Bank details are changed 
3. Payment is executed without validation 
4. Payment goes to fraudulent account 
5. Funds cannot be recovered 

This scenario can be prevented using vendor bank account validation during payment processing. 

Benefits for Treasury and Accounts Payable 

Implementing automated supplier bank verification enables: 

• prevention of wrong supplier payments 

• reduction of returned payments 

• improved supplier master data quality 

• fraud prevention in accounts payable 

• secure payment processing 

Especially in Europe, IBAN verification for supplier payments becomes increasingly important. 

Conclusion 

BEC fraud often starts with manipulated supplier bank details. Without proper validation, treasury teams risk sending payments to incorrect or fraudulent accounts. 

Automated supplier bank details verification ensures that payments are sent to the intended beneficiary — reducing fraud risk and preventing returned payments. 

Get in touch with us — we will support you on your transformation journey.  

For more information, contact us at sales(at)alseda.com