ArtHouse Cloud Logs v1 Gave Hackers All They Needed to Take Over Accounts

The ArtHouse Cloud Logs v1 leak dropped on Telegram on September 13, 2025. It contained 28,286 records packed with email addresses, plaintext passwords, and the URLs of services those users had accessed. For anyone who got hold of that file, the next steps were obvious. This kind of credential dump does not sit idle. It gets used fast, often within the same day it appears.

Why This Is Dangerous

The ArtHouse Cloud Logs v1 dataset gave attackers exactly what they need to move quickly and quietly. Plaintext passwords mean no cracking required. Email addresses serve as usernames on most platforms. URLs reveal which services the victims were actually using, letting attackers prioritize their targets. Someone with this file could spend an afternoon running automated login attempts against email providers, cloud storage, finantial apps, and more. The 28,286 records in this log represent real people with real active sessions at the time the malware captured their data.

What Was Exposed

• Email addresses used as login identifiers across services
• Plaintext passwords harvested directly from compromised devices
• URLs revealing which platforms and APIs the victims were accessing
• 28,286 total records in the leaked v1 archive
• Endpoint and API host data indicating active service connections

Why This Matters

A stealer log like ArtHouse Cloud Logs v1 is not just a privacy violation. It is an operational toolkit for criminals. The combination of a working email, a confirmed password, and a list of services that person uses allows an attacker to map out a victims digital life. They can access email to intercept password reset links, then pivot to banking or social media accounts. They can sell the credentials in bulk or use them for targeted fraud. The v1 label suggests this was an earlier batch in a series, and the patterns seen here likely repeat across the v2 and later variants.

How Stealer Log Works

A stealer log is produced by infostealer malware that runs silently on an infected device. The malware hooks into browsers and applications to capture login forms, saved passwords, session tokens, and browsing history. It can also log keystrokes and capture screenshots. Once it has collected enough data, it exfiltrates everything to a remote server or sends it directly to a Telegram bot controlled by the attacker. The resulting log file is then sold, traded, or simply dumped in public chaneels like the one where this v1 dataset appeared. The whole process from infection to public exposure can happen in a matter of days.

Check If You Are Affected

If your email address or password appears in the ArtHouse Cloud Logs v1 dataset, an attacker may already have tried using those credentials on your other accounts. The sooner you know, the sooner you can act.

Heroic.com has indexed over 400 billion records from known breaches and stealer logs. Search your email address at heroic.com to see if you appear in this dataset or any other confirmed breach. It is free to check, and knowing your exposure is the first step toward locking things down.