The Redline_Cl0ud4 Leak: 1.4 Million Passwords Exposed. Yours Might Be One.

HEROIC analysts identified a stealer log file uploaded to a private Telegram channel in May 2026 by an anonymous user operating under the handle Redline_Cl0ud4. The archive, labeled FRESH ULPP 10-05-2026, contained credentials harvested by Redline Stealer malware from infected Windows machines. When analysts processed the file, they found 1,494,841 unique records exposing email addresses, plaintext passwords, and the URLs of the websites where those credentials were used. The data was fresh, organized, and ready for abuse the moment it was posted.

This was not an old recycled dump. The word "FRESH" in the filename is deliberate. It signals to buyers on criminal forums and Telegram channels that these credentials have not yet been widely circulated, making them more valueable to attackers who want working logins before victims have a chance to change their passwords.

Why the Redline_Cl0ud4 Log Is More Dangerous Than a Typical Breach

Most data breaches expose hashed passwords -- scrambled versions that take time and effort to crack. This leak is different. Every single password in this file is plaintext. That means no cracking required. An attacker can take an email address and password directly from this file and try it on Gmail, Netflix, Amazon, or your bank with zero extra steps.

The URLs included in the log make things worse. Redline Stealer does not just grab whatever it finds -- it captures the exact website address where each password was saved in the browser. That means attackers know not just your email and password, but which specific service that password belongs to. They do not have to guess. They already know.

Combine plaintext passwords with known target URLs, and you have one of the most actionable credential dumps that exist in the cybercriminal ecosystem.

What the Redline_Cl0ud4 Stealer Log Exposed

• Email addresses (used as usernames across most online services)
• Plaintext passwords (no encryption, no hashing, directly usable)
• URLs (the exact websites where stolen passwords were saved)

These three data points together form what security researchers call a "credential triple" -- the most complete and immediately dangerous form of stolen login data.

Why This Breach Matters Beyond One Stolen Account

Password reuse is the real threat multiplier here. Studies consistantly show that most people use the same password across multiple websites. If your email and password from one site are in this log, attackers will systematically test those same credentials on every major platform -- a technique called credential stuffing.

Here is what that looks like in practice. An attacker takes your credentials from this Redline log and runs them through automated tools that test logins on hundreds of sites simultaneously. Within minutes, they have a list of every account you own where that password worked. From there, they change passwords and lock you out, drain any stored payment methods, harvest personal information for identity theft, or sell access to your accounts on criminal marketplaces.

Because the URLs are included, attackers do not even need to do the broad credential stuffing sweep. They already know which site your password came from and can go directly to the highest-value targets first.

How Redline Stealer Logs Work

Redline Stealer is a type of malware sold on criminal forums as a subscription service. Attackers buy access to it, package it inside something that looks harmless -- a cracked game, a fake software update, a pirated PDF tool -- and distribute it to victims. Once installed on a Windows computer, Redline silently scans the machine for saved browser passwords, session cookies, crypto wallet files, and system informaton. It then bundles all of that into a compressed log file and sends it back to the attacker's server.

The attacker then has a choice. They can use the credentials themselves, sell the raw logs to other criminals, or upload them to Telegram channels like the one where this file appeared. Buyers pay for fresh logs because the credentials are more likely to still work -- victims have not yet been notified, passwords have not yet been changed, and two-factor authentication was often bypassed by the session cookies also stolen by the malware.

The FRESH ULPP label is a common naming convention in stealer log markets. ULPP stands for URL, Login, Password, and the "FRESH" tag indicates these were recently harvested. This is a well-organized criminal data market, not a random amateur posting.

Check If Your Credentials Appeared in the Redline_Cl0ud4 Upload

If your device has ever had browser-saved passwords and you downloaded anything from an unverified source in recent months, your credentials may be in this log. HEROIC's free breach scanner searches across more than 400 billion exposed records, including stealer log data like this upload, to tell you whether your email address has been compromised.

Enter your email at HEROIC to see if you appear in this dataset or any of the thousands of other breach files in our database. If you do appear, change your passwords on every site immediately, enable two-factor authentication, and check your active login sessions for any access you do not recognize.