Mix Fresh B4_Jx Combolist: 4,922 Passwords Leaked in April 2026

In April 2026, HEROIC analysts tracking dark web and Telegram-based leak channels identified a combolist circulating under the name Mix Fresh B4_Jx, posted by an anonymous Telegram user. The file contained 4,922 records, each pairing an email address with a plaintext password, and in many cases a matching website URL showing exactly where that login was meant to be used.

Why This Is Dangerous

Because the passwords in this file were stored and shared in plaintext, no cracking or decryption is required to use them. Anyone who downloads this combolist can immediately try each email and password pair against popular websites, email providers, and financial services. When a URL is attached to a credential pair, attackers get a head start, since it points them straight to the account the login was originally used on.

What Was Exposed

Based on verified data from this listing, the following information was included:

• Email addresses
• Plaintext passwords
• URLs linked to the associated accounts

Why This Matters

Plaintext email and password combinations are among the most immediately usable data on the dark web. Criminals feed lists like this into automated credential stuffing tools that test each pair across hundreds of other sites in seconds. If you reused a leaked password anywhere else, that reuse is what turns a single exposed account into a full account takeover, and from there into identity theft or financial fraud on accounts that had nothing to do with the original breach.

How Combolists Are Built

A combolist is not a hack of one company. It is a compiled file of "combo" entries, typically email-and-password pairs, gathered from multiple older leaks, phishing campaigns, or malware infections and merged together by the person who uploads it. That is why combolists are frequently shared for free or low cost on Telegram, since the underlying credentials were often already exposed elsewhere. What makes them dangerous is convenience: they hand attackers a ready-to-use list without any additional effort.

Check If You Are Affected

If you think your email address could be part of the Mix Fresh B4_Jx combolist, or any other leaked dataset, HEROIC's free breach scanner checks your address against a database of more than 400 billion leaked records. It takes seconds to search, and it is the fastest way to find out if your credentials are already circulating on the dark web, so you can change any reused passwords before someone else does.