Search Your Email: 529 Records Leaked in Reruj.sosnowiec.pl Breach

Reruj.sosnowiec.pl Stealer Log Exposes 529 Records

In June 2026, HEROIC analysts identified a stealer log file uploaded to Telegram that exposed 529 records tied to reruj.sosnowiec.pl. The file surfaced on 10 June 2026 and contains email addresses, plaintext passwords, and the URLs those credentials were entered on, all pulled directly from infected devices.

Why This Stealer Log Is Dangerous

The passwords in this dump are stored in plaintext and matched to the exact login URLs they were used on, so an attacker does not need to crack or guess anything. They can simply take the email, password, and web address together and log straight into the account.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs associated with the logins

Why This Matters

Plaintext passwords tied to login URLs are exactly the kind of data used in credential stuffing and account takeover. If any of the 529 people in this dump reused their password on other accounts, such as email, banking, or shopping sites, an attacker could use this single leaked password to break into those accounts too.

How Stealer Logs Work

Stealer logs come from infostealer malware, which infects a device, often through a phishing link or fake download, and quietly copies everything saved in the browser: usernames, passwords, cookies, and autofill data. Criminals then bundle that stolen information into a log file and sell or trade it on Telegram channels and dark web forums, which is how this reruj.sosnowiec.pl data surfaced.

Check If You Are Affected

Take a moment to search your email address in HEROIC's free breach scanner. It checks against a database of more than 400 billion leaked records, including stealer logs like this one, so you can find out right away if your credentials need to be changed.