The lionking_cloud Stealer Log Was Created 9 Months Ago. The Data Just Went Public.

In July 2025, a Telegram user uploaded a stealer log file tied to lionking_cloud, quietly exposing 40,514 records containning email addresses, plaintext passwords, and endpoint URLs. For months, the data circulated in private channels. By April 2026, it had gone fully public -- putting every affected user at serious, immediate risk.

Why This Is Dangerous

Stealer logs are among the most damaging types of credential leaks because they capture data directly from infected devices -- often in real time. Unlike database breaches, stealer logs include live session tokens, saved passwords, and endpoint data harvested at the moment of infection. Plaintext passwords require zero cracking; attackers can use them immediatley across dozens of services.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• URLs (endpoint and API host data)

Why This Matters

The 9-month gap between the original upload and public exposure is not unusual for stealer logs -- they often move through private Telegram groups and dark web forums before surfacing openly. But that gap also means affected users had no warning. If your email and password appear in this dataset, every account where you reuse that password is now vulnerable. API host URLs in the dataset could also expose corporate systems to targeted attacks.

How Stealer Logs Work

Stealer log breaches originate from malware -- typically infostealer trojans distributed via phishing emails, malicious downloads, or compromised software. Once installed on a victim's device, the malware harvests stored credentials from browsers, password managers, and applications. The stolen data is then packaged into log files and sold or shared on platforms like Telegram. Because the data is captured directly from the device, it bypasses encryption and captures credentials in plain form.

Check If You Are Affected

HEROIC's free breach scanner checks your email against more than 400 billion exposed records -- including stealer logs like this one. If your credentials appear in the lionking_cloud dataset or any other known breach, you'll know instantly. Don't wait for another 9 months to find out your data is circulating. Search now and take back control.