The SNOWCLOUD Stealer Log Quietly Leaked 1.1M Passwords Online

The SNOWCLOUD Stealer Log Quietly Leaked 1,110,336 Passwords Online

On July 8, 2025, HEROIC threat analysts noticed a stealer log file called SNOWCLOUD-VALIDSULP-FROMTRAFFIC.txt_part_9 slip onto a Telegram channel with almost no fanfare. There was no big announcement, just another numbered part in an ongoing series, but the file itself contained 1,110,336 exposed records, including email addresses, plaintext passwords, and the URLs each login belongs to. The fact that this is labeled "part 9" tells us the group behind it has already released at least eight other batches before this one.

Why This Is Dangerous

Quiet leaks like this one are often more dangerous then loud, headline-grabbing breaches, because fewer people notice and fewer victims think to change their passwords. Every credential in the SNOWCLOUD file sits in plaintext, so an attacker can immediatly try the email, password, and URL combination against the real site without any extra work. The "VALIDSULP" naming suggests this batch has already been filtered down to logins that were confirmed to work at the time it was collected.

What Was Exposed

• Email addresses tied to compromised accounts
• Plaintext passwords for each account
• URLs identifying the exact site each login belongs to

Why This Matters

Because SNOWCLOUD has already put out multiple parts of this dump, the total number of people affected across the full series is likely much larger then this single file suggests. Each new part feeds credential stuffing attacks, where bots test stolen logins across banking, email, and shopping sites at scale, and every successful match opens the door to account takeover, identity theft, and financial fraud for the person behind it.

How the SNOWCLOUD Stealer Log Was Built

Stealer logs like SNOWCLOUD are produced by malware that infects a device, often through a cracked download, pirated software, or malicious link, and then silently harvests saved browser passwords, autofill entries, and login URLs. The stolen data streams back to whoever runs the malware, who sorts it into "traffic" based on when it was collected, then breaks it into numbered parts, like this part 9, before distributing it across Telegram channels and dark web marketplaces.

Check If You Are Affected

Since SNOWCLOUD has released this data in multiple parts, it is worth checking your exposure across the whole series, not just one file. HEROIC's free breach scanner searches a database of more than 400 billion leaked records, so you can quickly see if your email or passwords are part of this leak and take action before an attacker does.