The KATANA_CLOUD FREE Leak Exposed 18,215 US Accounts and Passwords

KATANA_CLOUD FREE Stealer Log Exposes 18,215 US Accounts

HEROIC analysts found a stealer log file labeled "KATANA_CLOUD FREE" that a Telegram user uploaded on June 3, 2024. The file contained 18,215 records tied to accounts in the United States, each pairing an email address with a plaintext password and the URL of the login page it belongs to. Every one of these records is a ready-to-use login sitting on a public Telegram channel.

Why This Is Dangerous

Because these passwords were exposed in plaintext, there is no encryption for an attacker to break. Anyone who obtains this file can pair each email, password, and URL and log in directly, with no cracking or guesswork required.

What Was Exposed

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

Why This Matters

A dataset of 18,215 US accounts is more than enough to fuel credential stuffing attacks, where automated tools test each stolen email and password pair against other popular sites. Anyone who reused this password elsewhere faces the risk of account takeover, identity theft, or financial fraud.

How Stealer Logs Work

A stealer log comes from infostealer malware that infects a device through a malicious download, cracked software, or a phishing link. Once installed, it quietly harvests saved browser passwords, autofill data, and session details, then bundles everything into a log file. These files are commonly shared or sold on Telegram channels shortly after collection, which is exactly how this dataset became public.

Check If You Are Affected

Want to know if your login is part of this leak or another one like it? HEROIC's free breach scanner checks your email against a database of more than 400 billion exposed records. Run a free scan today and change any password you have reused across accounts.