2.4 Million Passwords From Redline Cloud ulpss 23 Just Surfaced

HEROIC analysts identified a combolist file circulating on Telegram named “Redline Cloud ulpss 23.” The file surfaced on July 18, 2026 and contains 2,405,610 records pairing login credentials with plaintext passwords, along with the URLs of the sites each login was meant to unlock. Names like “Redline Cloud” and file tags such as “ulpss” (a common underground shorthand for URL, login, password, and stealer-sourced data) are frequently used by uploaders to describe combolists assembled from stealer-malware output, though HEROIC cannot verify the exact origin of this specific file beyond what its own label claims.

Why a File This Large Is Especially Dangerous

At over 2.4 million records, this is one of the larger combolists HEROIC has catalogued recently. Because every password in this file is stored in plaintext, anyone who downloads the list can read and use each credential immediately, with no cracking or decrypting required. Combined with the target URLs included in the file, an attacker does not need to guess where to try a stolen login. The file tells them exactly where to go.

What Was Exposed

• Email addresses tied to the accounts in this file, usable to identify and target victims directly.
• Plaintext passwords, stored and shared with no encryption, meaning anyone who obtains the file can read them instantly.
• URLs showing exactly which site or service each credential pair unlocks, making it trivial for an attacker to know where to try each login.

Why Scale Changes the Risk Calculation

A file of this size can supply an automated credential-stuffing operation with millions of attempts in a single run. The core risk with any combolist is credential stuffing: automated tools that take every email and password pair and try it against dozens of popular websites in seconds. If you have ever reused a password across more than one account, and most people have, a single leaked line here can lead to a compromised email account, drained loyalty points, hijacked social media, or worse.

How Large-Scale Combolists Like This Are Assembled

Rather than the result of one company's breach, a combolist is an aggregation of credentials scraped together from multiple sources: prior data breaches, phishing pages, and malware-infected computers. These files circulate on Telegram and similar platforms, often labeled by size, date, or target audience to help buyers find what they want quickly.

Once in the wrong hands, a combolist becomes fuel for credential stuffing, an automated process where bots attempt every email and password pair against a wide range of websites. Because password reuse is so common, even a modest combolist can lead to a wave of account takeovers.

Check If You Are Affected

The safest move after any exposure like this is to find out quickly whether your own information is part of it. HEROIC's free breach scanner checks your email address against a database of more than 400 billion breached and leaked records, including combolists, stealer logs, and other underground dumps like this one. If a match turns up, change the affected password immediately, enable multi-factor authentication wherever it is offered, and avoid reusing that password anywhere else.