The Chello.fr Breach Happened Months Ago. The Data Just Went Public.

HEROIC analysts identified a combolist labeled "chello.fr" circulating on a Telegram channel in June 2026. The file paired 3,816 email addresses with plaintext passwords and the URLs of the sites those logins belong to, the standard format attackers use to automate login attempts across the web.

The Chello.fr Breach Happened Months Ago. The Data Just Went Public.

By the time HEROIC analysts spotted this file circulating on Telegram, the credentials inside had likely been sitting in private channels for weeks or months already. That gap matters: it means anyone whose email and password are in this file has had a live, unprotected login sitting on the dark web the entire time, whether they knew it or not. The passwords were stored in plaintext, so there is no cracking required, an attacker only needs to copy the pair and try it.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs linking each credential pair to its original login page

Why This Matters

Anyone whose email and password appear in this chello.fr file faces a real risk of credential stuffing, where automated tools feed leaked logins into hundreds of websites at once looking for a match. If the password here has ever been reused on another account, banking, email, or shopping, that account is exposed too. The longer a leaked credential sits unnoticed, the more time an attacker has had to try it elsewhere.

How Combolists Like This One Are Built

Combolists are compiled by merging credentials pulled from older breaches, phishing kits, and malware logs into a single searchable file, then formatted as email:password or email:password:URL so they can be fed straight into automated login tools. They are traded and sold cheaply on Telegram and dark web forums because they let low-skill attackers run large-scale login attempts with almost no technical effort. A file's age does not make it safe. Old combolists still work against anyone who has not changed the password since.

Check If You Are Affected

You do not have to guess whether your information is sitting in a dump like this one. HEROIC's free breach scanner checks your email address against more than 400 billion leaked records pulled from combolists, stealer logs, and dark web marketplaces. Run a free scan, and if a match turns up, change that password everywhere else you have used it.