The 8.9K Mix Combolist Leak Exposed 8,545 U.S. Accounts

HEROIC analysts identified a combolist called 8.9K Mix Combo list Full Valid that a Telegram user uploaded on July 16, 2026. The file contains 8,545 records of email addresses, plaintext passwords, and the URLs those credentials were used on, and it is tagged to accounts based in the United States. The "Full Valid" label in the name is a claim commonly used by sellers to signal that every credential in the file has been checked and still works.

Why This Is Dangerous

Because the passwords are stored in plaintext and the seller claims the credentials are verified as valid, an attacker gets a ready-to-use list with very little wasted effort. Each of the 8,545 email and password pairs can be tested directly against the site listed in the URL field, and against other popular services in case the same password was reused, giving attackers a high success rate compared to random guessing.

What Was Exposed

• Email addresses
• Plaintext passwords
• Associated URLs

Why This Matters

For the 8,545 U.S. accounts in this combolist, the risk is not limited to a single website. If any of these individuals reused their email password on a bank, retailer, or social media account, that same password can now be used to break in elsewhere. A combolist advertised as "full valid" is also more likely to attract buyers looking to run large-scale credential stuffing campaigns, since they are paying specifically for working logins rather than a random, unverified list.

How Combolists Work

A combolist is a plain text file of login credentials, typically formatted as email:password, assembled from sources like phishing pages, malware infections, or older breaches. Sellers frequently label their files "valid" or "checked" after running the credentials through automated login tools to confirm which ones still work, then sell or share the verified subset, exactly the kind of file 8.9K Mix Combo list Full Valid appears to be. This verification step is what makes labeled combolists more dangerous than raw, unchecked ones.

Check If You Are Affected

To find out if your email address is part of this combolist or any other exposed dataset, run a free scan with HEROIC's breach checker. It searches a database of more than 400 billion compromised records, giving you a fast way to see if a password you are using has already been leaked and verified by criminals.