The Lionking_cloud Stealer Log Exposed Exactly 42,747 Passwords

HEROIC analysts found a stealer log file identified as lionking_cloud uploaded to a public Telegram channel on June 10, 2025. The file contains 42,747 records pulled from infected devices, including email addresses, plaintext passwords, and the URLs of the accounts those passwords unlock. Because the data comes from compromised endpoints rather than a breached company server, the credentials reflect real, active logins at the time they were harvested.

Why the Lionking_cloud Stealer Log Is Dangerous

Every password in this log is stored in plain text, so there is nothing standing between an attacker and the account it protects. Paired with the matching URL for each entry, the log tells an attacker exactly which website or service a stolen login opens, making it simple to attempt access without any guesswork or password cracking.

What Was Exposed in the Lionking_cloud Leak

• Email addresses
• Plaintext passwords
• URLs identifying the exact site or service tied to each login

Why This Matters for the 42,747 Accounts Involved

With more than 42,000 working credential pairs in circulation, this log is large enough to fuel widespread credential stuffing, where automated tools try each email and password combination across many other websites at once. Anyone who reused a password from one of these accounts elsewhere is at risk of having additional accounts, including banking, email, or shopping logins, taken over. Data like this is also commonly resold or shared further on dark web marketplaces, extending the window of risk well beyond the original leak.

How Stealer Logs Like Lionking_cloud Are Created

A stealer log does not come from a hacked company database. It is built when malware infects a person's computer or phone, often through a fake download or malicious attachment, and then quietly copies every saved login from the browser along with the web address each one belongs to. The stolen data is sent back to whoever controls the malware, who packages it into a log file such as this one and distributes or sells it through channels like Telegram.

Check If You're Affected by the Lionking_cloud Leak

If you want to know whether your email address appears in this leak or any other, HEROIC's free breach scanner checks it against a database of more than 400 billion leaked records. Run a free scan today and change any passwords you've reused elsewhere.