One Telegram Upload. 44,790 Records. The premiumArtHouse Cloud Log Exposed Them All.

In March 2026, HEROIC analysts tracked a stealer log file named "premiumArtHouse Cloud.part02" that had been uploaded to Telegram and distributed across threat actor channels. The file contained 44,790 records harvested from compromised endpoint devices, including email addresses, plaintext passwords, and the specific URLs where those credentials were captured. This is the second part of a multi-file stealer log campaign operating under the premiumArtHouse Cloud label.

Why Plaintext Passwords From Infected Devices Are a Direct Threat

When stealer malware captures passwords, it does not encrypt or transform them. It pulls exactly what the browser has stored: the real, usable password in plain text. That means anyone who downloads this file and finds your email address also has a working key to your account. There is no cracking step, no delay, and no technical skill required to exploit it.

The URLs included alongside each credential make the situation worse. Instead of guessing where to try the password, an attacker already knows the exact site. They can sort the file by domain, pull every record tied to a banking site or email provider, and begin attempting logins in minutes.

What Was Exposed in the premiumArtHouse Cloud Stealer Log

• Email Addresses: Account identifiers that connect this stolen data to real people and real accounts across the web.
• Plaintext Passwords: Ready-to-use credentials extracted directly from browser password storage on infected machines.
• URLs: The specific websites and services where each credential pair was active at the time of infection.

Why the premiumArtHouse Cloud Data Is Still Dangerous Months Later

Stealer log data does not expire quickly. Most people do not change their passwords until something goes wrong. The accounts referenced in this file from March 2026 are likely still accessible using the same credentials today. That is the window attackers exploit: the gap between when data is stolen and when victims finally find out.

The recieve of this data by threat actors on Telegram gives it broad reach quickly. Once a file like this circulates freely, it gets folded into credential stuffing tools and combolist databases used in automated attacks. Forty-four thousand records sounds manageable, but when fed into an automated login bot, even a 1% success rate translates to nearly 450 compromised accounts. Identity theft, fraudulent purchases, and account lockouts are the likely outcomes for affected users.

How the premiumArtHouse Cloud Stealer Log Was Built

Stealer logs like this one are the product of information-stealing malware installed on victims' computers without their knowledge. The malware, distributed through phishing emails, fake downloads, or infected software packages, silently extracts saved passwords from web browsers once it gains access to a device.

The "Cloud" designation in the file name likely refers to how the compiled data was staged or stored before being split into parts and uploaded to Telegram. Part02 being in circulation suggests at least one other file (part01) exists or existed from the same campaign. HEROIC monitors these multi-part distributions closely because they often represent larger coordinated harvesting operations targeting users across multiple platforms and geographies.

Find Out If the premiumArtHouse Cloud Breach Included Your Email

HEROIC maintains a breach database of over 400 billion exposed records, including stealer log files like this one. Scanning your email address is free and takes under a minute. If your credentials appeared in the premiumArtHouse Cloud log or any other indexed breach, you will see exactly what data was exposed so you can act on it directly.

Do not wait for an attacker to be the first one who tells you your account was compromised. Check now and stay ahead of it.