CryptogoL12 Stealer Log Surfaces on Telegram: 3,756 Records Leaked

CryptogoL12 Stealer Log Surfaces on Telegram

HEROIC analysts identified a stealer log, tracked internally as CryptogoL12, uploaded to a Telegram channel on 24 July 2026. The file contains 3,756 records harvested directly from infected devices, including email addresses, plaintext passwords, and the URLs of the websites those credentials unlock. Because the data was collected by malware rather than pulled from a single company's database, it links each victim's login pages directly to their actual password, which is what makes stealer logs especially useful to criminals.

Why This Stealer Log Is Dangerous

Unlike a typical company data breach, a stealer log pairs a website address with the exact password typed into it at the time of infection. That means an attacker doesn't have to guess which service a leaked password belongs to. They can open the matching URL, enter the plaintext password, and be logged in within seconds. With 3,756 of these ready-made combinations circulating, even a small percentage of still-valid logins gives an attacker a working set of accounts to exploit immediately.

What Was Exposed

• Email addresses used to log into online accounts
• Plaintext passwords for those accounts
• URLs showing exactly which sites the credentials belong to

Why This Matters

Because passwords in this log are stored in plaintext and matched to specific site URLs, the most immediate risk is account takeover: an attacker can log in directly without needing to crack or guess anything. If any of the 3,756 people affected reused that same email and password combination elsewhere, credential stuffing attacks could extend the damage to banking, email, or shopping accounts far beyond the original infected device.

How Stealer Logs Work

Stealer logs come from a specific type of malware that quietly installs itself on a victim's computer, often through a fake download, cracked software, or a malicious email attachment. Once running, it scans the browser's saved login data and autofill history, then bundles everything, usernames, passwords, and the websites they belong to, into a single file. That file is then sold or, as in this case, uploaded for free to a Telegram channel where anyone can download and use it.

Check If You Are Affected

If you think your credentials might be part of this or any other leak, HEROIC's free breach scanner checks your email address against a database of more than 400 billion leaked records, including stealer logs like this one. Run a free scan to see if your information has been exposed and get guidance on which passwords to change right away.