Inside the Fehu Free Logs: How Malware Harvested 62,956 Passwords

HEROIC analysts identified a large stealer log titled "Fehu Free Logs," uploaded to Telegram in July 2026. The file contains 62,956 records: email addresses, plaintext passwords, and the URLs of the accounts those credentials belong to, all harvested from malware-infected devices.

Why This Is Dangerous

A file this size represents tens of thousands of individually infected devices, each one contributing a small slice of stolen data to the larger log. Unlike an old, recycled leak, stealer log credentials tend to be current, since they reflect the passwords victims were actually using at the moment their device was compromised.

What Was Exposed

• Email addresses
• Plaintext passwords
• URLs for each corresponding login

Why This Matters

With 62,956 working login pairs in circulation, the risk of credential stuffing and account takeover rises sharply. Attackers can automate login attempts across major platforms, and given the volume here, even a modest success rate translates into thousands of compromised accounts.

How Stealer Logs Work

A stealer log is the output of information-stealing malware, a type of program that infects a device through pirated software, malicious downloads, or phishing attachments, then quietly copies saved browser passwords, autofill data, and session cookies. The malware sends this data back to the attacker, who compiles it into a "log," names it, here, "Fehu Free Logs", and distributes it, often for free as a way to build a reputation before selling premium logs.

Check If You Are Affected

Use HEROIC's free breach scanner, checking against more than 400 billion compromised records, to see whether your email address appears in this stealer log or any other known exposure.