U.S. Telegram Stealer Log Exposed 40,697 Plaintext Passwords

40,697 Stolen Credentials From a Telegram Stealer Log Dump

In March 2026, HEROIC analysts identified a stealer log file that had been uploaded to Telegram by an anonymous user. The file contained 40,697 records pulled directly from infected endpoints, exposing email addresses, plaintext passwords, and URLs tied to real user sessions. This type of disclosure is not a company breach. It is the result of malware running silently on individual computers, harvesting credentials before anyone noticed.

The data surfaced without warning, which is typical for stealer log dumps. By the time a file like this circulates on Telegram, the credentials it contains have often already been tested against major platforms.

Why Plaintext Passwords Make This Especially Dangerous

Most breach databases contain hashed passwords, which require additional work to crack. This dump is different. Every password in this dataset is in plaintext, meaning anyone who downloads the file can immediately see the exact characters of each exposed password. There is no cracking required, no waiting, and no technical skill needed. The attacker opens the file and logs in.

When a password is exposed in plaintext alongside an email address and the URL it was used on, an attacker has a complete login package. They know exactly which site to target, which account to use, and what the password is. That combination is definitly one of the most dangerous configurations a stolen credential can take.

What Was Exposed in This Stealer Log

• Email Addresses: Full email addresses tied to real user accounts
• Plaintext Passwords: Unencrypted, immediately usable passwords for each account
• URLs: The specific websites and services each credential was harvested from

Why This Stealer Log Puts U.S. Users at Real Risk

The records in this dump are tagged to United States-based endpoints, meaning the affected users are primarily in the U.S. Stealer logs that include URLs are particularly valuable to attackers because they enable highly targeted attacks. Instead of trying a stolen password across hundreds of sites randomly, an attacker can go directly to the right site with the right credential.

Common consequences include account takeover on financial platforms, email hijacking that leads to password resets elsewhere, and identity theft when personal data is accessible through the compromised account. If any of the exposed passwords are reused across multiple services, the damage can spread far beyond the original entry point. Credential stuffing tools can test thousands of combinations per minute, and this data would feed directly into those workflows.

How Stealer Log Malware Works

Stealer logs are produced by a category of malware designed to silently collect credentials from an infected device. Once installed, typically through a phishing link, a fake software download, or a malicious email attachment, the malware scans the browser's saved passwords, session cookies, and form autofill data. It then transmits everything it finds to a remote server controlled by the attacker.

The malware often operates for days or weeks before the victim realizes anything is wrong. By that time, the collected data has been packaged into a log file and shared or sold. Telegram has become a popular distribution channel for these files because channels can reach thousands of subscribers instantly and with little moderation. This particular log was uploaded directly by a Telegram user, suggesting it was shared openly rather than sold privately, which means the number of people who may have recieved and used this data is impossible to estimate.

What makes stealer logs distinct from traditional data breaches is that the infection hapened on the user's own device. No company was hacked. No database was stolen. The credentials were taken directly from the browser or session on the victim's machine.

Check If Your Email Was Exposed in This Dump

HEROIC maintains a breach intelligence database with over 400 billion indexed records, including stealer logs, combolists, database dumps, and dark web collections. If your email address appeared in this Telegram stealer log upload, you can find out immediately using HEROIC's free breach scanner.

Enter your email at HEROIC.com to run a free scan. If your credentials were part of this dump or any other known breach, the scanner will surface the details so you can take action before an attacker does.