Quiet Leak: Mix Fresh B4_Jx Stealer Log Exposes 806 Passwords

In late April 2026, HEROIC analysts quietly flagged a stealer log dump named "Mix Fresh B4_Jx" that had been uploaded to a Telegram channel. It did not make headlines, but the file contained 806 records tied to United States based accounts, including email addresses, plaintext passwords, and the URLs of the sites those credentials were used on. Leaks like this rarely draw attention, which is exactly what makes them worth watching closely.

Why This Is Dangerous

Nothing about this leak is loud. There was no press release, no company statement, and no public confirmation, just a quiet upload to a Telegram channel where anyone can download it. Because the passwords are stored in plaintext and paired with the exact login URL, the data is immediately usable. An attacker does not need special skills or tools to try these 806 sets of credentials against the sites they came from.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs of the login pages tied to each account

Why This Matters

Because this kind of leak spreads quietly, the people affected often have no idea their information is circulating until something goes wrong. If any of these 806 passwords were reused on other accounts, attackers can use credential stuffing to slip into email, banking, or shopping profiles without setting off any alarms. A compromised email account can then be used to reset passwords elsewhere, quietly expanding the damage well beyond the original 806 records.

How Stealer Logs Work

Stealer logs come from infostealer malware, which infects a device through pirated downloads, cracked software, or malicious attachments and silently harvests saved logins and browsing URLs from the browser. These logs are then quietly passed around on Telegram channels and dark web forums, exactly as this one was, often with little fanfare until someone notices the data being used against real accounts.

Check If You Are Affected

Quiet leaks like this one are precisely why HEROIC monitors continuously rather than waiting for headlines. Use our free breach scanner to check your email address against a database of more than 400 billion leaked records, including this stealer log, and secure any accounts before the silence turns into a real problem.