UP_KURZL0G Leak: 229,373 Passwords Now on Dark Web

HEROIC analysts uncovered a stealer log labeled "URL PRIVATE DATABASE UP_KURZL0G" uploaded to a Telegram channel on October 29, 2025. The file held 229,373 records combining email addresses, plaintext passwords, and the login URLs tied to each account, all pulled directly from compromised devices.

Why This Is Dangerous

Unlike a hacked corporate database, a stealer log reflects credentials exactly as a person typed or saved them. The passwords in this file are not hashed or scrambled, they are plain, working text. That means anyone who gets hold of this file can log into the matching accounts immediately, with no extra effort required.

What Was Exposed

• Email addresses
• Plaintext passwords
• Login URLs for the associated accounts

Why This Matters

Every one of these 229,373 records is a potential entry point. Attackers load exposed credentials into credential stuffing scripts that hammer email providers, banks, and shopping sites in seconds. Because so many people recycle the same password, a single leaked login often opens the door to account takeover, then identity theft, then financial loss down the line.

How Stealer Logs Work

Stealer malware typically rides in on a pirated app, a fake software crack, or a malicious email attachment. Once it lands on a device, it siliently harvests saved browser passwords, autofill entries, and session cookies, then compiles them into one tidy log file. These logs get traded, sold, or dumped for free on Telegram, which is exactly how this data surfaced.

Check If You Are Affected

HEROIC maintains a database of more than 400 billion breached records, and its free breach scanner lets you check your email address in seconds. Run a free scan today to find out if your credentials showed up in this leak or any other.