How the LuffichCloud Stealer Log Leaked 927,144 Passwords Online

HEROIC analysts traced a large stealer log labeled "LuffichCloud FREE TXT" back to a Telegram upload dated 18 June 2026. The file holds 927,144 records, each pairing an email address with a plaintext password and the URL of the login page it unlocks. At nearly a million records, this is one of the larger stealer logs HEROIC has tracked recently, and because the passwords sit in plaintext, they are ready to use the moment someone opens the file.

Why the LuffichCloud Leak Is Dangerous

Scale is what makes this leak dangerous. With 927,144 email, password, and URL combinations in a single file, an attacker running automated scripts can attempt logins across hundreds of thousands of accounts in a short amount of time. There is no need to guess a password or figure out which site it belongs to. Both pieces are already sitting side by side in the log, ready to be tested.

What Was Exposed in the LuffichCloud Leak

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

Why This Matters for Reused Passwords

A leak of this size is exactly what powers credential stuffing at scale. Automated tools take the email and password pairs from LuffichCloud and try them against banking sites, email providers, and online retailers. Anyone in this log who reused a password anywhere else is now at risk of account takeover, and from there, identity theft or financial fraud become very real possibilities.

How a Stealer Log This Large Gets Assembled

Stealer logs are built by malware that silently harvests saved credentials and autofill data from infected devices. A file the size of LuffichCloud is typically compiled from many infections rather than a single machine, with the operator combining harvested data into one master file before distributing it. From there, it is packaged and shared on Telegram or dark web forums, exactly how the LuffichCloud file made its way into circulation.

Check If Your Email Was in the LuffichCloud Leak

With nearly a million records involved, the odds that your information is affected are worth taking seriously. HEROIC's free breach scanner checks your email address against a database of more than 400 billion leaked records, including stealer logs like LuffichCloud, and tells you instantly if you've been exposed. Run a free scan now and change any reused passwords before someone else gets there first.