How the ‘1.331M USA MIX’ Combolist Leaked 1.26M Login Credentials

1,261,884 Accounts Leaked in the "COMBOLIST 1.331M USA MIX FRECH" Dump

On July 29, 2026, HEROIC analysts found a large combolist circulating in a private Telegram channel, uploaded under the label "COMBOLIST 1.331M USA MIX FRECH." The file contained 1,261,884 records pairing email addresses with plaintext passwords, along with URLs tying each set of credentials to the site it was captured from.

Why This Combolist Is Dangerous

With more than 1.26 million plaintext credential pairs in one file, attackers have everything they need to attempt logins immediately, no password cracking involved. The URLs bundled with each record tell an attacker exactly which site to target first, and the sheer size of the list makes it valuable for large-scale, automated attacks against dozens of popular websites at once.

What Was Exposed in the "1.331M USA MIX" Leak

• Email addresses
• Plaintext passwords
• URLs identifying the site tied to each credential pair

Why This Matters for the People in This List

A combolist of this size is built for credential stuffing at scale. Automated bots can run all 1.26 million email and password pairs against major websites within hours, testing for account reuse. If your credentials appear here and you have used the same password anywhere else, you face a real risk of account takeover, identity theft, and financial fraud, particularly if the password unlocks an email or banking account.

How a Combolist Like This Gets Built

Large combolists are typically assembled by combining smaller breaches, phishing hauls, and malware-stolen credentials into a single master file, then labeled by size and region, in this case "USA MIX," to advertise its contents to buyers. These lists circulate through private Telegram channels and dark web marketplaces, where criminals purchase or trade them and run bulk login attempts against banking, email, retail, and social media platforms.

Check If You Are Affected

With over 1.26 million records in this leak alone, there is a real chance your information is included. HEROIC's free breach scanner checks your email against a database of more than 400 billion exposed records, so you can find out quickly and reset any passwords you may have reused.