Inside Redline Cl0ud4 Stealer Logs: 6,788,552 Passwords Harvested

HEROIC identified a massive stealer log collection labeled Redline Cl0ud4 ULPP (dated July 10, 2026) being distributed on Telegram. This dataset contains a staggering 6,788,552 compromised records captured by RedLine infostealer malware. Every password is stored in plaintext, creating an unprecedented volume of immediately exploitable credentials.

Nearly 7 Million Passwords Exposed in Plaintext

The scale of plaintext exposure in this dump is extraordinary. Each of the nearly 7 million passwords appears in its original, unencrypted form. Attackers do not need specialized hardware, cracking dictionaries, or technical expertise — they can simply search the data and use any credential they find. At this volume, the potential for mass account compromise is severe.

What Was Exposed

• Email Addresses — millions of account identifiers exposed to phishing and account enumeration attacks
• Plaintext Passwords — ready for instant exploitation across any service where they are used
• URLs — revealing the complete landscape of compromised websites and online services

Industrial-Scale Credential Stuffing Threat

With nearly 7 million credential pairs, attackers can execute credential stuffing campaigns of unprecedented scale. Automated tools test these email-password combinations against every major platform — banking, healthcare, government services, enterprise applications. The mathematics are stark: even a 1% success rate across 6.7 million records means nearly 70,000 accounts compromised from this single dump alone.

RedLine Infostealer: A Technical Breakdown

This data was harvested by RedLine, one of the most prolific infostealer malware families in active operation. RedLine targets browser-stored credentials across Chrome, Firefox, Edge, and Opera. It extracts saved passwords, form autofill data, cryptocurrency wallet files, and authentication cookies. The malware is sold as a service on underground forums, enabling even low-skill attackers to deploy it through phishing emails, YouTube scam links, and trojanized software downloads. Stolen data is automatically structured into searchable log files for easy distribution.

Check If Your Credentials Were Exposed

With nearly 7 million records, this is one of the largest stealer log dumps HEROIC has tracked. HEROIC monitors over 400 billion compromised records from data breaches and stealer logs globally. Use HEROIC's breach scanner to search your email address or domain immediately and determine whether your credentials appear in this dataset. If they do, change every affected password and enable two-factor authentication on all critical accounts.