Xavier_Group Stealer Log Leaks 140,574 Passwords Online

The "Xavier_Ulp - 400900 Xavier_Group" Stealer Log Surfaces on Telegram

HEROIC analysts identified a large stealer log labeled "Xavier_Ulp - 400900 Xavier_Group" that a Telegram user uploaded on 24-Jul-2026. The file contains 140,574 records, an unusually large batch, made up of email addresses, plaintext passwords, and the URLs those credentials were captured from.

Why the Xavier_Group Stealer Log Is Dangerous

A leak of this size means a huge number of people are affected by the exact same weaknesses at once. Every password in the file is stored in plaintext, so there is nothing to decrypt, and every record is paired with the specific site it belongs to. For an attacker, that turns a single download into 140,574 ready-to-use login attempts spread across whatever services these victims use.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs identifying the exact site each login belongs to

Why This Matters

With well over 100,000 records exposed, this leak creates account takeover risk on a large scale. Anyone in this batch should assume their exposed password could be used to log into their account immediately, since it requires no cracking. Reused passwords compound the danger further, since credential stuffing can carry the exposure into other accounts the victim never expected to be at risk.

How Stealer Logs Work

Stealer logs are generated by malware that infects a device and quietly harvests everything the browser has saved, including passwords, autofill details, and site URLs. That data is compiled into a single file and delivered to the attacker, who then shares or sells it, in this case through Telegram, often labeling large batches like this one to make them easier to organize and distribute.

Check If You Are Affected

With a leak of this scale, checking your exposure is worth doing right now. HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records, including stealer logs like this one, and tells you immediately if you were exposed. Run a free scan and change any password it flags.