Your Passwords Could Be Exposed: Cool.dk Stealer Log Leak

In June 2026, HEROIC's dark web analysts found a stealer log posted to Telegram on 10-Jun-2026 containing 748 records tied to cool.dk. The log included email addresses, plaintext passwords, and the URLs of the sites those credentials were captured on, a hallmark of malware that had been silently pulling saved logins off an infected device before the data was gathered up and shared.

Why This Cool.dk Stealer Log Leak Is Dangerous

Because each password in the file is paired directly with the exact site it unlocks, anyone who obtains this log can attempt to log into the matching account immediately. No cracking or password guessing stands between the attacker and 748 real, working logins.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs of the sites the credentials were used on

Why This Matters

Since these passwords were captured in plaintext, they can be used right away without any decryption. If any of the 748 people in this log reused their cool.dk password on other sites, those accounts are exposed too through credential stuffing, where attackers automatically try the same leaked login across other services until one grants access.

How Stealer Logs Work

Stealer logs are created by infostealer malware, which usually infects a device through a fake download, pirated software, or a phishing attachment. Once running, it quietly copies saved browser passwords and login details, then sends everything back to the attacker. That stolen data is then compiled into a file and shared or sold, in this case posted directly to a Telegram channel.

Check If You Are Affected

If you use a cool.dk email address or have logged into an account with it, it is worth checking whether your details appear in this log. HEROIC's free breach scanner checks your email against a database of more than 400 billion leaked records in seconds, so you can find out right away and change any exposed passwords.