11,392 Passwords Leaked From Cuvox.de in Stealer Log Dump

In June 2026, HEROIC's dark web analysts found a stealer log uploaded to Telegram on 10-Jun-2026 containing 11,392 records tied to cuvox.de. The log included email addresses, plaintext passwords, and the URLs of the sites those credentials were captured on, data consistent with malware that had been quietly harvesting saved logins off an infected device before the file was compiled and shared.

Why This Cuvox.de Stealer Log Leak Is Dangerous

With 11,392 email and password pairs in one file, each matched to the exact site it unlocks, an attacker has a large, ready-made list of working logins. There is no cracking or guesswork involved, only the time it takes to try each one.

What Was Exposed

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

Why This Matters

Because the passwords were stored in plaintext, they can be used immediately, with no decryption needed. If any of the 11,392 people in this log reused their cuvox.de password on other accounts, those accounts are exposed too through credential stuffing, where attackers automatically try the same stolen logins against other websites and services until one works.

How Stealer Logs Work

Stealer logs are generated by infostealer malware, which commonly spreads through fake downloads, pirated software, or phishing attachments. Once it infects a device, it silently copies saved browser passwords and login details, then sends everything back to the attacker. That stolen data is compiled into a file and shared or sold, in this case uploaded directly to a Telegram channel.

Check If You Are Affected

If you use a cuvox.de 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.