The BF-154.66.166.125 Stealer Log Exposed 2 U.S. Accounts’ Passwords

In July 2026, HEROIC analysts identified a stealer log file, tracked internally as BF-154.66.166.125, that had been uploaded to a Telegram channel on July 30, 2026. The file contained 2 exposed records tied to a United States based source, including email addresses, plaintext passwords, and the URLs of the sites those credentials unlock.

Why This Is Dangerous

Unlike a typical database leak, this file pairs each stolen password with the exact web address it was used on. That means an attacker does not have to guess which service a password belongs to. They can open the listed URL, enter the email and password exactly as captured, and log in as the victim within seconds.

What Was Exposed in the BF-154.66.166.125 Log

• Email addresses
• Plaintext passwords
• URLs linked to each set of credentials

Why This Matters

Even a small file like this one can cause outsized damage. Because the passwords were captured in plaintext and matched directly to login pages, they are immediately usable for account takeover. If either exposed credential has been reused anywhere else, attackers can run it through credential stuffing tools to break into email, banking, or social media accounts within minutes, opening the door to identity theft and financial fraud.

How This Stealer Log Was Likely Created

Stealer logs like this one come from malware that infects a device, often through a fake download, cracked software, or a malicious email attachment. Once installed, the malware quietly reads saved passwords, browser autofill data, and session details, then bundles everything into a text file and sends it to the attacker. These files are frequently traded or dumped for free in Telegram channels, exactly where HEROIC analysts found this one.

Check If You Are Affected

Even a two record leak is worth taking seriously if one of those records is yours. HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records, including stealer logs like this one, so you can find out in seconds whether your credentials have been exposed and take action before anyone else does.