ZELENKA CLOUD Leak Exposes 3,453 Plaintext US Passwords

HEROIC analysts found a stealer log called ZELENKA CLOUD FREE LOGS uploaded to a Telegram channel on January 13, 2023. Inside was a single consolidated file of 3,453 records, each one an email address paired with a plaintext password and the exact URL that login opens, pulled from infected US devices.

Why This Is Dangerous

Look closely at what each record actually contains: not a hash, not a partial match, but the full plaintext password sitting next to the login page it belongs to. That level of detail removes every obstacle for an attacker. There is nothing to crack and nothing to guess, just a direct path into the account.

What Was Exposed

• 3,453 individual records
• Email addresses
• Plaintext passwords
• Associated login URLs
• Endpoint data concentrated in the United States

Why This Matters

Even a single reused password from this file can cascade into a much bigger problem. Attackers run leaked email and password pairs through credential stuffing tools that test the same login across banking, retail, and email platforms. If you reused this exact password elsewhere, that account is exposed too, and the associated email becomes a target for phishing built around real, working details.

How a Stealer Log Like ZELENKA CLOUD Gets Made

This file did not come from a corporate breach, it came from infostealer malware quietly running on individual victims' computers, usually delivered through a cracked download or fake installer. The malware pulls every saved password and cookie it can find from the browser, packages it, and sends it to its operator, who compiles harvests like this 3,453-record file and shares them on Telegram.

Check If You Are Affected

HEROIC's free breach scanner checks your email address against more than 400 billion leaked records, including stealer logs like ZELENKA CLOUD, so you can confirm your exposure in seconds and change any reused passwords before someone else does.