The ArtHouse Combolist Means 8.3 Million Passwords Are Circulating

HEROIC analysts identified a combolist, tracked as ArtHouse URL Combo Cloud Fresh_part_0003, that a Telegram user began circulating with data dated to March 12, 2026. The file contains 8,329,079 records pairing email addresses with plaintext passwords, along with the URLs those credentials belong to, giving anyone who downloads it a ready-made list of working logins across a huge number of accounts.

Why This Is Dangerous

A combolist this size is not a single company's breach. It is a compilation, pulling matched email and password pairs from many earlier leaks and stealer logs into one file that is easy to search and automate against. With over 8 million pairs to work through, an attacker does not need to target anyone specifically. Automated tools can quietly attempt each pair against major websites and flag every login that still works.

What Was Exposed

• Email addresses
• Plaintext passwords
• Associated URLs

Why This Matters

Because the passwords in this file are stored in plaintext and matched directly to an email address, they are immediately usable for credential stuffing, where attackers try the same combination across banking, email, and social media sites. Anyone who reused a password across multiple accounts is at risk of account takeover, and once an attacker is inside one account, they often have enough personal information to attempt identity theft or financial fraud elsewhere.

How Combolists Work

A combolist is built by aggregating credentials pulled from previous data breaches, phishing campaigns, and stealer log malware, then cleaning and formatting them into a single, easy-to-use file of email and password pairs. Criminals trade and resell these files because they save the work of collecting credentials from scratch. Once assembled, a combolist like this one is typically shared on Telegram channels or dark web forums, where it can be picked up and tested by many different attackers over time.

Check If You Are Affected

With more than 400 billion records in its breach database, HEROIC can tell you quickly whether your email address turned up in this ArtHouse combolist or any other leak. Run a free scan to check your exposure and get steps for securing any account that may be at risk.