Stealer Log Breach: TXTLOG_ALIEN 753 Leaked 12.8 Million Plaintext Passwords on Telegram

HEROIC analysts flagged a large-scale credential dump on February 17, 2025, originating from a Telegram channel operating under the name TXTLOG_ALIEN - 753. The log contained approximately 59 million lines of data and exposed 12,883,096 unique records, each pairing an email address with a plaintext password and a homepage URL. The speed and scale of distribution pointed to a deliberate campaign to push stolen credentials into the hands of as many threat actors as possible.

Why Plaintext Passwords Are the Most Dangerous Part of This Leak

Most breaches expose hashed passwords, which at least require some effort to crack. This one did not. Every password in this dataset was stored and leaked in plaintext, meaning anyone who downloaded this file could log into affected accounts immediately with no additional tools. Combined with email addresses that serve as usernames on most platforms, this data gives attackers a ready-made attack kit. They can attempt the same email and password combination across banking sites, email providers, e-commerce platforms, and social media within minutes.

What Was Exposed

• Email Address: The primary account identifier used across virtually every online service
• Plaintext Password: The actual password in readable form, usable instantly without decryption
• Homepage URL: The website associated with each credential, revealing what service was compromised

Why This Matters: From One Breach to Many Accounts

Stealer logs like TXTLOG_ALIEN - 753 fuel a cycle of attacks that extends well beyond the original compromise. Once attackers have a working email and password pair, they run it through hundreds of other sites in a process called credential stuffing. If you reuse passwords, a single exposed credential can unlock your email, your bank, your cloud storage, and your streaming accounts. The homepage URLs in this dataset make the targeting even more precise: attackers know exactly which service each credential belongs to, so they do not need to guess where to start.

How Stealer Logs Work

A stealer log is a file produced by infostealer malware, a type of malicious software that silently runs on a victim's computer and copies saved passwords directly from browsers, password managers, and applications. The malware is typically delivered through phishing emails, cracked software downloads, or malicious browser extensions. Once installed, it harvests credentials and transmits them to the attacker without any visible signs to the user. The collected data is bundled into logs and sold or freely distributed on platforms like Telegram, where the barrier to entry for purchasing or downloading stolen credentials is extremely low. TXTLOG_ALIEN - 753 is one in a numbered series, suggesting an organized, ongoing operation rather than a one-off incident.

Check If Your Email Appeared in the TXTLOG_ALIEN - 753 Leak

HEROIC's free breach scanner searches across more than 400 billion records, including stealer log compilations like this one. If your email address was part of this dataset, you will know immediately. Enter your email at HEROIC to see every breach your credentials have appeared in, and take action before an attacker does it for you.