10.9K Combo List: 9,904 Confirmed Working Logins Leaked

10.9K Combo List: 9,904 Confirmed Working Logins Leaked

HEROIC analysts identified a file labeled 10.9K Mix Combo List Full Valid, uploaded to a Telegram channel on 12 July 2026. HEROIC verified 9,904 records in the file, each containing an email address, a plaintext password, and the URL of the site the credential was tied to. The Valid label means the uploader claims to have already tested these credentials and confirmed they work, which makes this batch more dangerous than an average, unverified leak of the same size.

Why This Is Dangerous

Files marketed as valid combo lists are attractive to criminals precisely because someone has already done the work of confirming the credentials function. That means the 9,904 email and password pairs in this file are more likely to grant an attacker real access than credentials pulled from a random, unverified source. No cracking or guessing is required, only testing each pair against its target site.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs of the sites tied to each credential

Why This Matters

A combo list built from confirmed working credentials is exactly the kind of file attackers use to run large-scale credential stuffing attacks, automatically testing each pair against banking sites, email providers, and social media platforms. If any of the 9,904 people in this leak reused a password, an attacker could gain access to several of their accounts using this one file alone. From there, account takeover, identity theft, and financial fraud can follow quickly.

How Combo Lists and Stealer Logs Work

A combo list is a compiled set of email and password pairs, often assembled from multiple stealer logs, which are themselves produced by malware that infects a device through a pirated download, fake update, or malicious attachment and then harvests saved passwords and autofill data. Criminals frequently merge several smaller logs into a single combo list, test the credentials, and label the working ones valid before selling or sharing the file on Telegram channels and dark web forums. This extra verification step is what makes a labeled valid combo list more dangerous than an unverified stealer log of the same size.

Check If You Are Affected

With 9,904 confirmed working credentials in this file, the risk to anyone included is immediate. HEROIC's free breach scanner checks your email address against a database of more than 400 billion leaked records, including combo lists and stealer logs like this one, and tells you right away if you have been exposed. Run a free scan today to check your status.