The lionking_cloud Dump Hit Telegram in July. Now It’s Everywhere.

In July 2025, a Telegram user published a stealer log package called lionking_cloud, exposing 19,656 records harvested from compromised devices. At the time, the drop circulated quietly across a handful of Telegram channels. Months later, HEROIC analysts confirmed the dataset has since spread far beyond its original posting. The credentials -- email addresses, plaintext passwords, and active service URLs -- are now in the hands of hundreds of actors across the criminal ecosystem.

Why This Is Dangerous

Stealer logs are among the most immediately actionable data types in the breach landscape. These are not hashed passwords that require cracking -- they are plaintext credentials copied directly from the victim's browser or cached session. The lionking_cloud package also includes URLs showing exactly which services each victim was using at the moment of infection. That combination allows attackers to target accounts with surgical precision, skipping the guesswork that other credential attacks require. The time between a log like this going public and the first account takeover attempts is measured in minutes, not days.

What Was Exposed

• Email Addresses
• Plaintext Passwords (unencrypted, ready to use)
• URLs (active service endpoints captured from infected devices at the time of compromise)

Why This Matters

When a stealer log goes public on Telegram, it does not stay in one place. The file is downloaded and redistributed within hours. Each copy reaches new actors who can independently run credential stuffing attacks against all 19,656 people in the dataset. Here is what that looks like for real victims:

• Credential stuffing: Automated tools test every email and password pair against hundreds of websites simultaneously
• Account takeover: Once inside an email account, attackers reset passwords on every linked platform
• Financial fraud: Banking and payment services captured in the URL data are seperate priority targets pursued in parallel
• Identity theft: Email inboxes contain enough personal data -- addresses, ID scans, tax documents -- to enable full identity impersonation

How Stealer Logs Work

Infostealer malware is purpose-built to harvest credentials silently from everyday devices. It spreads through phishing campaigns, pirated software, or malicious browser extensions. Once installed, it scans for saved passwords in Chrome, Firefox, Edge, and other browsers, as well as credentials cached in desktop applications. It also captures active session cookies, which can allow attackers to bypass password authentification entirely. Everything is packaged into a structured log file and transmitted to the operator's server. The lionking_cloud package was compiled from a batch of infected devices and released freely on Telegram -- part of a broader pattern of free log distribution that makes credential data widley accessable across criminal comunities. Victims rarely know their device was infected until accounts are locked or misused.

Check If You Are Affected

HEROIC's free breach scanner searches more than 400 billion records -- including stealer log packages like lionking_cloud. If your email address or password appears in this dataset or any other known breach, you will receive an immediate alert so you can change your credentials before an attacker uses them. Run your free scan at HEROIC.com today.