The 11.7K Combo List Means Attackers Could Be in Your Accounts

In June 2026, HEROIC analysts identified a combo list labeled "11.7K Mix Combo list Full Valid" being shared on Telegram. Despite the name, the file actually contains 11,559 records, each pairing an email address with a plaintext password and the login URL it was validated against.

Why This Is Dangerous

A combo list bundles working email and password pairs together so they're ready to test against other websites immediately. Because this list is marked "Full Valid," every one of the 11,559 entries has already been confirmed to work, meaning someone could be logging into these accounts right now.

What Was Exposed

• Email addresses tied to the affected accounts
• Plaintext passwords confirmed to be valid and working
• Login URLs showing which site each password was verified on

Why This Matters

Combo lists like this one are built specifically for credential stuffing, where attackers automate login attempts across many sites using the same email and password. If your details are in this file and you've reused that password anywhere else, you face a real risk of account takeover and financial fraud.

How This Combo List Was Made

Combo lists are typically compiled from stealer logs and older leaks, then filtered so only working logins remain, which is what "Full Valid" refers to here. Criminals prize these lists because every entry has already been tested, saving them the trouble of sorting out dead accounts themselves.

Check If You Are Affected

With 11,559 confirmed working accounts in this one list, the chances of your information being included are real. HEROIC's free breach scanner checks your email against more than 400 billion leaked records, so you can find out now and change your password before it's used against you.