How Stealer Logs Work: ArtHouse Cloud Leak Exposes 192,523 Passwords

HEROIC analysts identified a large stealer log titled "BIG PACK ArtHouse Cloud Logs TG ArhontCorp.part2," uploaded to a Telegram channel on August 12, 2026. The file contains 192,523 records of email addresses, plaintext passwords, and the URLs those credentials unlock.

How This Stealer Log Was Built

Stealer logs like this one are produced by infostealer malware, a type of malicious software that infects a device through pirated downloads, fake cracks, or phishing attachments. Once installed, it quietly copies passwords saved in the browser, along with autofill data and the web addresses tied to each login, then sends everything back to whoever controls the malware. Files this large are usually the result of many individual infections merged into one release.

What Was Exposed in the ArtHouse Cloud Logs

• Email addresses
• Plaintext passwords
• URLs tied to each set of credentials

Why This Matters

With over 192,000 credentials exposed in plaintext, this log is a prime source for credential stuffing attacks that test the same login across many sites. Reused passwords tied to these accounts can lead to account takeover, identity theft, or financial fraud.

Why This ArtHouse Leak Is Dangerous

Because the passwords are stored in plaintext and matched directly to their URLs, there is no encryption for an attacker to break through. The data is ready to use the moment it changes hands.

Check If You Are Affected

HEROIC's breach intelligence database holds more than 400 billion compromised records, including large stealer logs like this one. Run a free scan to check whether your email address or password appears in this leak or any other breach on record.