HEROIC Analysts Flag Redline_Cloud4 Leak of 5,299,408 Records

HEROIC analysts flagged a massive new upload this week called FRESH ULPP 21-05-2026 Redline_Cloud4, posted to Telegram on May 21, 2026. Inside the file sat 5,299,408 records, making it one of the largest single leaks our team has tracked from this particular Redline batch series.

Why This Is Dangerous

When researchers spot a file this large, the concern is not just the number itself but how fast it can spread once other criminals notice it too. A batch of over five million records tends to get copied, resold and redistributed accross multiple underground channels within days, meaning far more people gain access to it than the original uploader intended.

What Was Exposed

• 5,299,408 individual records
• Email Addresses
• Plaintext Passwords
• URLs tied to each login

Why This Matters

At this scale, its almost certain that accounts belonging to people who have never heard of Redline or Telegram leak channels are sitting inside this file. Because the passwords are plaintext, anyone who obtains a copy can begin testing logins right away, no special skills requried. Analysts note that files of this size often get broken into smaller resold chunks, so the damage can keep spreading long after the original upload.

How Redline Produces Leaks of This Scale

Redline stealer malware has been circulating for years, continuously infecting new devices through cracked software, fake updates and malicious downloads. Analysts believe files like this one represent an accumulation of many individual infections merged together over time rather than one single event, wich is how the count climbs into the millions.

Check If You Are Affected

Our analysts recommend checking your exposure directly rather than waiting to see if this leak makes headlines. HEROIC's free breach scanner checks your email against more than 400 billion leaked records, including this Redline_Cloud4 batch, so you can act before someone else does.