Belgian Corporate Email Sample Leak Exposes 1,047 Work Accounts

HEROIC analysts found a combolist named BELGIUM CORP-OTHERS-PRO MAILS TEST SAMPLE that a Telegram user uploaded on February 22, 2026. The file is labeled by its uploader as a sample of Belgian corporate and professional email accounts, and it contains 1,047 records of email addresses paired with plaintext passwords and source URLs. Why This Is Dangerous: The word 'sample' in this file's name is a warning sign of its own. Sellers commonly release small samples like this one to prove a much larger dataset exists and works, before selling the full file privately. That means 1,047 people may already be exposed as a preview of a bigger corporate credential leak still circulating out of public view. What Was Exposed: - Professional and corporate email addresses - Plaintext passwords - URLs linking each pair to its source Why This Matters: Corporate email accounts often provide a path into a company's internal systems, vendor portals, and cloud services. If any of these 1,047 credentials are reused on work platforms, an attacker could pivot from a simple login into a business email compromise, exposing the person and potentially their employer to fraud, data theft, or further breaches. How This Combolist Was Assembled: Test sample files like this one are usually cut from a larger scraped or purchased dataset, targeted at professional email domains rather than random consumer accounts. Labeling it by region and business focus, in this case Belgian corporate mail, helps sellers market the full dataset to buyers looking for a specific type of target. Check If You Are Affected: HEROIC's free breach scanner checks your email against more than 400 billion leaked records, including corporate and professional email leaks like this one, so you can confirm quickly whether your work account was exposed and alert your organization if needed.