CZ Domain Stealer Log: 25,723 Plaintext Passwords Exposed

In early April 2023, a Telegram user uploaded a stealer log file containing credentials tied to Czech (.cz) domain accounts. The dataset, now cataloged as the CZ Domain stealer log, contains 25,723 exposed records, including email addresses, plaintext passwords, and the URLs of the sites those credentials unlock.

Why a Plaintext Password Leak Like This Is So Dangerous

Unlike breaches where passwords are hashed or encrypted, this log stored every password in plaintext. That means anyone who gets their hands on the file can read the passwords directly, no cracking required. Combined with the matching email address and site URL for each entry, attackers have everything they need to log into an account on the first try.

What Was Exposed in the CZ Domain Log

• Email addresses
• Plaintext passwords
• URLs of the websites and services tied to each login

Why This Matters to Anyone in This Dataset

Because passwords are rarely used only once, a single exposed login is often the key to several accounts at once. Criminals feed leaked email and password pairs like these into automated tools that test the same combination across banking sites, email providers, and social media platforms, a technique known as credential stuffing. If any of the 25,723 records in this log belong to you, and you have reused that password elsewhere, those other accounts are at risk too, along with the identity theft and financial fraud that can follow.

How Stealer Log Breaches Work

Stealer logs are different from a typical corporate data breach. Instead of hackers breaking into a company's servers, malware called an "infostealer" infects an individual's computer, often through a pirated download, a fake software crack, or a malicious email attachment. Once installed, the malware quietly copies every username and password saved in the victim's browser and sends it back to the attacker. Those stolen credentials are then bundled into a log file, like this one, and shared or sold on Telegram channels and dark web forums.

Check If Your Email Was Exposed

You don't have to wonder whether your information showed up in this leak or one of the thousands of others circulating right now. 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, so you can find out in seconds and take action before criminals do.