35,567 Plaintext Passwords Dumped in the Belgium 11 Leak

HEROIC detected a stealer log dataset labeled Belgium 11 distributed on Telegram in February 2023. Targeting Belgian users, this collection contains 35,567 records harvested by infostealer malware from compromised devices. Each record captures an email address, a plaintext password, and the URL of the Belgian or international service the victim was logged into when the malware intercepted their credentials.

35,567 Unprotected Passwords Ready for Abuse

Every password in the Belgium 11 dataset is stored in plaintext. There is no encryption, no hashing, and no technical barrier preventing immediate use. At 35,567 records, this represents a substantial number of Belgian residents whose login credentials can be exploited without any additional effort. Attackers downloading this dataset have instant access to tens of thousands of working passwords that can be tested against live services immediately.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• URLs (Belgian services and EU-wide platforms)

Credential Stuffing Threats for Belgian Users

Belgian users often maintain accounts across both local services and EU-wide platforms. Attackers exploit this by running the 35,567 leaked credential pairs through automated tools that test them against Belgian banking portals, government services like eID platforms, Belgian e-commerce sites, and pan-European services. Because many users rely on the same password for multiple accounts, a single leaked credential from a Belgian shopping site could grant attackers access to the victim's email, financial services, and social media accounts.

The Source: Infostealer Malware on Belgian Devices

These credentials were stolen from Belgian devices infected with infostealer malware. The infection typically begins with a malicious email, a fake software download, or a compromised advertisement. Once the malware gains a foothold, it systematically empties the browser's credential store, capturing every username, password, and associated URL. The stolen data is then organized into regional collections like Belgium 11 and uploaded to Telegram, where threat actors can download and exploit them freely.

Check If Your Credentials Were Exposed

Belgian users who store passwords in their browsers should check whether their credentials are part of this 35,567-record leak. HEROIC's breach scanner indexes over 400 billion compromised records from breaches worldwide. Search your email address to discover whether your login details appear in the Belgium 11 dataset or any other known breach, and take action to secure your accounts before attackers reach them.