Inside a Telegram Combolist: How the ‘Ok’ Leak Exposed 553 Passwords

In early June 2025, HEROIC analysts identified a combolist named Ok uploaded to Telegram by an unnamed user. The file contained 553 records pairing email addresses with plaintext passwords, along with URLs identifying the sites those logins belonged to. The data was verified as of June 4, 2025.

What a File Like This Actually Is

A combolist is one of the simplest and most common products traded on Telegram: a plain text file of email and password pairs, ready to test the moment someone downloads it. Because the passwords in this file are stored without any encryption, no cracking or guessing is involved. Anyone who gets a copy can start logging in immediately.

What Was Exposed in the Ok Combolist

• Email addresses
• Plaintext passwords
• URLs tied to each set of credentials

Why This Matters

Combolists exist because they work. Once one circulates, criminals run the pairs through automated tools that try each login against banking sites, email providers, and shopping accounts, a method called credential stuffing. Anyone whose email and password show up in this file faces a real risk of account takeover, identity theft, or financial fraud, particularly if that password was ever reused elsewhere.

How a Combolist Like Ok Gets Built

Combolists are usually assembled from a mix of older breaches, phishing pages, and stealer malware infections, then cleaned up, deduplicated, and packaged into a single file for sale or free distribution on Telegram. The URLs bundled with each entry, as seen in the Ok file, let a buyer see exactly which site a login unlocks, which is what makes even a modest list like this useful to criminals.

Check If You Are Affected

Understanding how a leak like this comes together makes it easier to see why checking your exposure matters, even for a smaller file. HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records, including this one, so you can find out in seconds and change any exposed passwords before someone else uses them.