How the TXT Cloud Stealer Log Ended Up Leaking 669,104 Logins

On 15-Nov-2025, a file calling itself 958K URL LOG PASS - TXT CLOUD started circulating in a Telegram channel, and once analysts got a closer look, it turned out to contain 669,104 sets of stolen credentials. This wasn't a hacked database pulled from some company's servers. It was a stealer log, meaning the data was scraped directly off ordinary people's infected computers.

Why This Is Dangerous

Stealer logs are dangerous for a simple reason: they hand attackers working logins, not just email addresses, wich makes them far more useful to criminals than a typical breach dump. Every line in this file pairs a real email address with a plaintext password and the exact URL where that password was used, so anyone who downloads it can log straight into someone's accounts without guessing anything.

What Was Exposed

• Email addresses tied to real accounts
• Plaintext passwords, stored with no encryption at all
• The exact URLs where each password was entered

Because the passwords are in plaintext, there's no need to crack or decrypt anything. Whoever grabs this file can start testing logins imediately.

Why This Matters

Most people reuse the same password across multiple sites, so a password stolen from one site often unlocks several others too. With 669,104 credential sets sitting in one file, the fallout could reach well beyond whatever site the malware first grabbed the password from. If you haven't changed your passwords in a while, now is a good time to start.

How Stealer Logs Work

A stealer log starts with malware, usually hidden inside a cracked game, a fake software installer, or a shady download link. Once that program lands on a victim's machine, it quietly copies saved passwords, browser cookies, and autofill data, then bundles everything into a text file and sends it back to whoever is running the malware. That transfer occured without the victim ever knowing, and the operator usually packages the results up to sell, or in this case, dumps it into a Telegram channel for anyone to grab.

Check If You Are Affected

The only way to know for sure if your information is part of this leak, or any of the thousands of others like it, is to check. HEROIC scans more than 400 billion (400B+) leaked records pulled from breaches and stealer logs just like this one. Run a free scan to see if your email shows up, and if it does, change that password everywhere you used it.