HEROIC Researchers Link the OK Combolist to 499 Leaked Login Pairs

What HEROIC Analysts Found in This OK Combolist

On June 5, 2025, HEROIC analysts identified a combolist labeled "OK" after it was uploaded to a Telegram channel by an individual user. The file contains 499 records pairing email addresses with plaintext passwords, along with the URLs of the login pages those credentials belong to. The affected accounts are tied primarily to the United States.

Why This Is Dangerous

Because the passwords in this file are stored in plaintext, anyone who obtains it can read and use them immediately, no cracking required. Even at 499 records, each entry gives an attacker a matching email, password, and login URL, everything needed to attempt a takeover of that account.

What Was Exposed in This Combolist

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

Why This Matters

A file of 499 credentials is still large enough to power automated credential stuffing attacks, where each pair is tested against banking sites, email providers, and social platforms. Anyone in this leak who reused their password elsewhere faces real risk of account takeover, unauthorized charges, or identity theft, since the same credentials can often unlock more than one account.

How Combolists Like This Are Built

Combolists are typically compiled by pulling email and password pairs from older breaches, phishing pages, or malware infected devices, then bundling them into a single file. Even small collections like this one are freely shared or sold on Telegram, where they can be picked up and used immediately by attackers with little technical skill.

Check If You Are Affected

If you want to know whether your email address is part of this leak or a larger one, HEROIC's free breach scanner checks your information against a database of more than 400 billion leaked records. Run a scan today and update any passwords you have reused across accounts.