The ZELENKA CLOUD FREE LOGS Dump: 1,629 Credentials Hit Dark Web

HEROIC analysts uncovered the ZELENKA CLOUD FREE LOGS stealer log dataset while monitoring dark web Telegram channels where stolen credentials are freely distributed among cybercriminals. The breech occured in June 2023 and contains 1,629 records including email addresses, plaintext passwords, and URLs gathered by information-stealing malware from infected devices. HEROIC has verified this dataset and confirmed it remains accessible to anyone with access to the underground forums where it was originaly posted. Victims in this collection have had no indication their credentials were captured and shared for nearly three years.

Why This Is Dangerous

Even a dataset of 1,629 records represents real individuals whose full login credentials, including the exact services they use, are in the hands of criminals. Stealer log data is particularly damaging because the passwords are plaintext and paired with the specific URLs where they work, removing all guesswork for attackers. Victims who havent changed their passwords since 2023 remain fully exposed to account takeover right now and should act imediately to protect themselves.

What Was Exposed

• Email Addresses -- The account identifier that criminals use to initiate login attempts and password reset attacks across platforms.
• Plaintext Passwords -- Harvested in unencrypted form directly from the browser at login, requiring zero processing before criminal use.
• URLs -- The exact web addresses where victims were authenticated, giving attackers a precise roadmap of which accounts to target per victim.

Why This Matters

Credential sets from collections like this one are used in bulk stuffing campaigns where each email and password pair is automatically tested across banking, e-commerce, and email platforms. The URL data included in this dataset makes these attacks more targeted than typical brute-force attempts because criminals already know which specific services each victim uses. Successful account takeovers are then monetized through unauthorized purchases, fraudulent transfers, or resale of verified account access to other criminals. Password reuse is the primary multiplier that turns a single stolen credential into a multi-platform fraud event.

How Stealer Logs Work

The ZELENKA CLOUD FREE LOGS dataset takes its name from a Telegram distribution channel, not from a specific company or website that suffered a security breach. The underlying data was collected by infostealer malware running on individual victims' devices, capturing credentials as they were used across any website or application. This type of attack bypasses company-level security entirely because the compromise happens on the user's own machine. Victims may have strong, unique passwords on every site they visit and still appear in a stealer log if their device was infected at any point.

Check If You Are Affected

HEROIC's free Dark Web Scanner has catalogued more than 400 billion compromised records, including stealer log files like ZELENKA CLOUD FREE LOGS, sourced directly from the same underground channels where criminals obtain them. Visit heroic.com to run your free scan now and find out in seconds whether your credentials are in this or any other known breach dataset. No account signup is required, and results are immediate.