How a Telegram Combolist Upload Exposed 1,153 ‘Mix valid’ Accounts

HEROIC analysts traced 1,153 exposed records back to a combolist labeled "Mix valid," uploaded to a Telegram channel in June 2026. Each record includes an email address, a plaintext password, and the URL of the site the credentials belonged to.

Why This Is Dangerous

Files labeled "valid" are especially concerning because it means someone already tested these credentials and confirmed they still work. That skips the guesswork for an attacker entirely. They are not hoping the login succeeds, they already know it does.

What Was Exposed

• Email addresses
• Plaintext passwords
• Associated login URLs

Why This Matters

A pre-verified list of working logins is valuable precisely because it removes the trial and error from an attack. Whoever assembled this file likely ran the credentials through an automated checker before uploading it, meaning the accounts in this leak were confirmed active as of June 2026. That makes credential stuffing and account takeover far more efficient for whoever gets hold of it, with identity theft and financial fraud as likely next steps.

How Combolists Work

A combolist starts as a raw pile of email and password pairs pulled from breaches, phishing pages, or malware logs. Before being shared, lists are often run through automated checking tools that attempt real logins and sort the results into "valid" and "invalid" files, exactly the kind of processing this label suggests happened here. The valid file is then the one that actually gets used or sold.

Check If You Are Affected

Because this list was likely pre-verified as working logins, it is worth checking your exposure sooner rather than later. HEROIC's free breach scanner searches more than 400 billion leaked records to tell you if your email and password have surfaced. Run a scan now and change anything that matches.