1,036,834 People at Risk After the COMBOLIST 1M JP MIX FRESH Leak

HEROIC analysts identified a dataset, tracked as COMBOLIST 1M JP MIX FRESH, that a Telegram user uploaded on 09-Sep-2025. The file contains 1,036,834 records, including email addresses, plaintext passwords, and the login page URLs tied to those accounts. As the name suggests, this is a combolist, a large compiled list of email and password pairs rather than a single company's breach.

Why This Is Dangerous

A combolist of this size, over one million records, is built specifically for automated attacks. Instead of targeting one person, criminals load the entire file into software that tests every email and password pair against dozens of popular websites at once. If your credentials are reused anywhere in this list, identity theft becomes far easier because an attacker no longer has to work for access, they just have to let the software run.

What Was Exposed

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

Why This Matters

With 1,036,834 records in this combolist, the scale alone makes it valuable to attackers running large-scale credential stuffing campaigns. If a password from this file is reused on another account, it can lead directly to account takeover and, in more serious cases, financial fraud or identity theft.

How Combolists Work

A combolist is built by combining email and password pairs from multiple sources, often pulled from older breaches, stealer log malware, or previously leaked databases, then merged and cleaned up into one large file. Attackers label combolists by size, region, or freshness, as seen here with a batch marked "1M," "JP," and "fresh," and share them through channels like Telegram so buyers know roughly what to expect before testing the list against real accounts.

Check If You Are Affected

If you want to know whether your information appears in this COMBOLIST 1M JP MIX FRESH file or any other breach, HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records. Run a scan now and change any password that may have been exposed.