How a Telegram Upload Exposed 12,058 attbi.com Emails and Passwords

How a Telegram Upload Exposed 12,058 attbi.com Records

On June 10, 2026, a Telegram user uploaded a stealer log file that HEROIC analysts later traced to attbi.com. Inside were 12,058 records, each combining an email address, a plaintext password, and the URL where that password had been used, the telltale structure of data pulled straight from an infected browser.

Why This attbi.com Leak Is Dangerous

With more than 12,000 plaintext passwords in one file, there is no encryption to slow an attacker down. Each password already sits next to the matching email and the exact site it unlocks, so whoever obtains this log can attempt logins immediately, at scale, across every record inside it.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs of the sites where the credentials were used

Why This Matters

A leak of this size gives attackers thousands of ready-made credential pairs to run through credential stuffing tools. Anyone who reused a password from this attbi.com login elsewhere is exposed to account takeover, and once an attacker is inside one account, identity theft and financial fraud often follow.

How This Stealer Log Was Built

Stealer logs come from infostealer malware, malicious code often hidden inside pirated software or fake downloads. Once it infects a device, it quietly copies every password and autofill entry saved in the browser and packages it into a text file. That file is then passed along or sold in bulk, often through Telegram channels, which is exactly the path this attbi.com data took before HEROIC identified it.

Check If You Are Affected

With 12,058 records involved, the odds that your information is among them are worth taking seriously. Use HEROIC's free breach scanner to check your email against more than 400 billion leaked records and find out immediately whether you were caught up in this leak.