74,868 Plaintext Passwords Dumped in PremiumArtHouse Logs

HEROIC's threat intelligence operations detected a recent stealer log collection labeled PremiumArtHouse Cloud Logs New 53k.part01 being distributed on Telegram. Dated July 2026, this is the first part of a multi-volume cloud log series containing 74,868 records with email addresses, plaintext passwords, and URLs harvested from compromised devices by infostealer malware.

Fresh Plaintext Passwords Pose the Highest Risk

All 74,868 passwords in this dump are stored in plaintext and, critically, this leak is extremely recent—dated July 2026. Unlike older breaches where many users may have already changed their passwords, fresh stealer logs contain credentials that are far more likely to still be active and valid. This gives attackers a narrow but potent window of opportunity to exploit these accounts before victims become aware their devices were compromised.

What Was Exposed

• Email Addresses — personal and business accounts used across a range of online services
• Plaintext Passwords — recently captured, unencrypted credentials with high likelihood of being current
• URLs — cloud services, web applications, and platforms where login credentials were harvested

Cloud Logs Mean Broader Credential Exposure

The "Cloud Logs" label indicates this data was collected and processed through cloud-based infostealer infrastructure—a growing trend in the cybercriminal ecosystem. Cloud-processed logs typically aggregate credentials from many infected machines into centralized repositories, enabling rapid sorting and distribution. The 74,868 credential pairs are then tested in automated credential stuffing campaigns against banking platforms, email services, corporate VPNs, and e-commerce sites. Anyone who reuses passwords across accounts faces compounding risk from this type of leak.

Modern Cloud-Based Stealer Operations

PremiumArtHouse represents a newer breed of stealer log operation that leverages cloud infrastructure for collection and distribution. The underlying malware—typically modern variants like Lumma, Stealc, or Mystic Stealer—infects devices through sophisticated phishing campaigns, malicious advertisements, and compromised software updates. Stolen credentials and session data are uploaded to cloud storage, processed through automated validation pipelines, and distributed in numbered parts through Telegram channels. This industrialized approach allows threat actors to process and release massive volumes of stolen data within days of collection.

Check If Your Credentials Were Exposed

HEROIC's breach intelligence database contains over 400 billion records from data breaches, stealer logs, and dark web monitoring operations. Use HEROIC's free breach scanner to check whether your email or credentials appear in the PremiumArtHouse Cloud Logs dump or any other known breach. Given the recent date of this leak, immediate action is critical—change potentially affected passwords now, ensure each account has a unique password, and enable two-factor authentication on all important services before attackers can exploit these fresh credentials.