ArtHouse Cloud Logs v3 Leak: 104,766 Records, Stadium-Sized

HEROIC analysts uncovered a second stealer log dump, ArtHouse Cloud Logs v3, posted to a Telegram channel on June 12, 2026. This one is even larger than its predecessor, containing 104,766 records of email addresses, plaintext passwords, and the URLs those logins belong to. To put that number in perspective, it is more people than fit inside most NFL stadiums, all with their credentials sitting exposed in a single file.

Why the Scale of ArtHouse Cloud Logs v3 Is Dangerous

Size matters with a leak like this. A larger stealer log means more infected devices, more stolen sessions, and more chances that a password reused elsewhere still works today. With over 100,000 records in one file, automated tools can test thousands of logins per minute without any manual effort from the attacker.

Because passwords are stored in plaintext alongside the exact site URL, there is no cracking or guessing involved. The credentials are ready to use the moment someone downloads the file.

What Was Exposed in This Breach

• Email addresses
• Plaintext passwords
• URLs tied to each stolen login

Why This Matters at This Scale

A leak of over 100,000 credentials is a goldmine for credential stuffing campaigns. Attackers feed the entire list into automated scripts that quietly try each email and password pair across banking, retail, and email platforms.

Every successful match can turn into account takeover, followed by identity theft or financial fraud. At this volume, even a small success rate still hands criminals thousands of working accounts.

How This Stealer Log Grew So Large

Stealer logs like this one grow through infostealer malware spreading across many devices before the data is bundled and released. Each infected machine contributes its own set of saved browser passwords, autofill entries, and session details.

Once enough logs accumulate, sellers or the malware operators combine them into a single large file, similar to this v3 release, and distribute it through Telegram channels or dark web marketplaces. The bigger the file, the more attractive it becomes to buyers looking to acheive quick access to many accounts at once.

Check If You Are Affected

With more than 100,000 records in this leak alone, the odds of a match are real. Run a free scan with HEROIC's breach checker to search across a database of over 400 billion leaked records and find out immediately if your information is part of ArtHouse Cloud Logs v3 or any other exposure.