The ‘Ok’ Combolist Leak Exposed 700 U.S. Email and Password Pairs

In May 2025, HEROIC analysts identified a combolist file uploaded to a Telegram channel by a user under the label "Ok." The file contained 700 exposed records tied to United States based accounts, including email addresses, plaintext passwords, and the URLs of the sites those login pairs unlock.

Why This Is Dangerous

A combolist packages working email and password pairs into a single, ready to use file. There is no decryption or cracking required. Anyone who gets a copy can plug the list directly into automated login tools and start testing accounts within minutes.

What Was Exposed in the "Ok" Combolist

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

Why This Matters

Combolists are the raw fuel behind credential stuffing attacks. Because the 700 pairs in this file are stored in plaintext and matched to specific login URLs, attackers can automate account takeover attempts at scale. Anyone who reused one of these passwords on another site risks having that account, and any linked financial or personal information, compromised through identity theft or fraud.

How Combolists Like This One Are Built

Combolists are typically assembled by combining email and password pairs harvested from older breaches, phishing pages, or stealer malware into one consolidated file. Sellers and Telegram users then repackage these lists, sometimes trimming or relabeling them, and redistribute them for free or for sale. The "Ok" file appears to be exactly this kind of repackaged list, sized at 700 records and aimed at United States accounts.

Check If You Are Affected

Combolists spread quickly once they hit Telegram, and a 700 record file can still cause real damage if your credentials are in it. HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records, so you can find out in seconds whether you were caught up in this leak and change your passwords before someone else uses them.