Mix Fresh B4_Jx Leak Exposes 173 US Login Credentials

Mix Fresh B4_Jx: 173 US Login Credentials Surface on Telegram

On April 20, 2026, HEROIC analysts found a stealer log called "Mix Fresh B4_Jx" after a Telegram user uploaded it to a channel dedicated to trading stolen logins. The file holds 173 records tied to accounts in the United States, each one pairing an email address with a plaintext password and the URL of the site the login was captured from. It's a small file, but every one of those 173 credentials is ready for an attacker to use immediately.

Why This Is Dangerous

Because the passwords were stored in plaintext, there is no encryption for an attacker to break. Whoever has this file can read every password exactly as it was typed and, using the paired URL, know exactly which site to try it on. That combination removes almost all the guesswork criminals normally need to do before attempting a login.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs tied to each set of credentials

Why This Matters

The 173 people in this file face immediate account takeover risk on the exact sites listed, and further risk if they used the same password anywhere else, since attackers routinely test stolen passwords across other services through credential stuffing. A single reused password can turn a small leak like this one into a much bigger problem for the person affected.

How a US-Targeted Stealer Log Like This Gets Made

Files like Mix Fresh B4_Jx are produced by malware running quietly on infected computers, capturing saved browser passwords and anything typed into a login screen. Each stolen password gets tagged with the URL it came from, then the whole batch is packaged into a file for the attacker to keep, sell, or in this case give away on Telegram. Because these logs come from whatever machines happen to be infected at a given time, the country and record count can vary widely from one upload to the next.

Check If You Are Affected

If you're in the US and think a device you use might be compromised, don't wait to find out. HEROIC's free breach scanner checks your email against more than 400 billion leaked records, including stealer logs like this one, so you can see right away if your credentials were exposed. Run a free scan and update any password that comes back as compromised.