A Telegram File Called Files_12.07 Holds 11,803 Passwords

HEROIC's threat intelligence team identified a stealer log file titled "Files_12.07_07.29" that was uploaded to Telegram in July 2026. Behind the generic, timestamp-style filename sit 11,803 records, each containing an email address, a plaintext password, and the URL where the credential was intercepted. The file's unremarkable name is part of a growing pattern in which threat actors use automated naming conventions to mass-distribute stolen credential dumps on messaging platforms.

Why a Generic Filename Hides a Serious Threat

The naming convention "Files_12.07_07.29" suggests this is one file in a larger automated collection operation. Stealer log operators often timestamp their dumps to track harvesting windows, meaning this file likely represents credentials stolen within a specific time frame. The systematic approach indicates an organized threat actor running continuous credential-harvesting campaigns rather than a one-time data theft.

The 11,803 records in this dump are all in plaintext, meaning every password can be read and used instantly. No decryption, no hash cracking, no additional effort required. For the individuals whose credentials are in this file, the threat is immediate and active from the moment it was posted on Telegram.

What Was Exposed in the Files_12.07 Dump

• Email Addresses — Account identifiers harvested from 11,803 infected devices, providing attackers with both login credentials and targets for follow-up phishing attacks.
• Plaintext Passwords — Unencrypted credentials captured in real time from browsers and password managers, immediately usable against the associated accounts and any other service where the same password is reused.
• URLs — The specific websites and login portals where each credential was intercepted, giving attackers a roadmap of which services each victim actively uses.

Why 11,803 Credentials Fuel Large-Scale Attacks

With nearly 12,000 stolen credentials, this single file gives attackers enough material to launch automated credential stuffing campaigns across every major platform on the internet. Each email and password pair is tested against banking portals, email providers, social media platforms, cloud services, and e-commerce sites in rapid succession.

Research consistently shows that more than 60% of users reuse passwords across multiple accounts. Applied to this dump, that means roughly 7,000 or more of these credentials will likely unlock accounts beyond the original sites where they were stolen. A single plaintext password from this file could give an attacker access to someone's email, their bank, their cloud storage, and their workplace systems.

How Stealer Logs Turn One Infected Device Into Thousands of Victims

Infostealer malware infects a device through malicious downloads, phishing emails, or compromised websites. Once installed, it silently monitors the browser and captures every credential the user enters or has saved. The malware records the email address, password, and URL for each login, along with cookies and session tokens that can bypass multi-factor authentication.

The harvested credentials are compiled into structured log files and uploaded to distribution channels like Telegram. A single filename like "Files_12.07_07.29" can represent data stolen from thousands of individual devices, all packaged for easy consumption by other criminals. The timestamp in the filename suggests a specific harvesting window, making these credentials particularly fresh and likely still valid.

Check If Your Credentials Were Exposed

Stealer logs with generic filenames like this one are uploaded to Telegram constantly, and yours could be among them without any notification. HEROIC's free breach scanner searches more than 400 billion compromised records to determine whether your credentials appear in this dump or any other known data breach.

If your credentials are found, change your password immediately on every account where you used it. Enable multi-factor authentication on all critical services, and run a comprehensive malware scan on your devices to remove any active infostealer that may still be harvesting your new credentials as you set them.