Mix Fresh B4_Jx Stealer Leak: 159 Passwords Exposed, Act Now

In late April 2026, HEROIC analysts discovered a stealer log dump called "Mix Fresh B4_Jx" uploaded to a Telegram channel by an anonymous user. The file contained 159 records tied to United States based accounts, including email addresses, plaintext passwords, and the URLs of the login pages those passwords belonged to. If you use accounts tied to a US email address, it is worth checking your exposure now rather than later.

Why This Is Dangerous

The passwords in this dump are stored in plaintext, which means there is no encryption to break and no delay between someone downloading the file and using the credentials to log in. Each record also lists the exact URL the password was used on, so an attacker does not need to guess which site to target. They can go straight to the login page and try the credentials immediately.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs of the associated login sites

Why This Matters

Anyone whose credentials appear in this log faces immediate risk of account takeover on the specific sites listed, and broader risk if the same password was reused elsewhere. Attackers routinely take small leaks like this one and run them through automated credential stuffing tools against email providers, banks, and retail sites. A single reused password can be all it takes to turn this leak into a bigger identity theft or financial fraud problem.

How Stealer Logs Work

Stealer logs are created by infostealer malware, which infects a device through pirated software, cracked downloads, or malicious attachments, then quietly copies saved usernames, passwords, and browsing URLs from the victim's browser. Once collected, the resulting file is often uploaded to Telegram channels or dark web forums, exactly as happened here, making it available to anyone who wants to test the credentials against other accounts.

Check If You Are Affected

Do not wait to find out the hard way. HEROIC's free breach scanner checks your email address against a database of more than 400 billion leaked records, including this stealer log. Run a search now and change any passwords that show up before someone else uses them.