What Is a Stealer Log? PegasusClaud Leak Hits 12,612 People

If you have never heard the term stealer log before, PegasusClaud is a perfect example to learn from. Uploaded to Telegram on December 28, 2023, the file contains 12,612 records, and unlike a traditional company data breach, it didn't come from hackers breaking into a server, it came from malware sitting quietly on individual people's computers.

Why This Is Dangerous

A stealer log is dangerous specifically because of what it captures directly from the source, saved browser passwords in their original, unencrypted form. There's no database to hack into and no security team to alert anyone, the malware simply copies what the browser already had stored and ships it off, meaning PegasusClaud contains passwords exactly as each victim originally typed them.

What Was Exposed

• Email addresses tied to each infected browser profile
• Passwords saved and leaked in fully readable plaintext
• URLs identifying which accounts each password combination unlocks

Why This Matters

Understanding the difference between a stealer log and a typical company breach matters because it changes how you respond. With a company breach, you might occassionally get an official notice telling you exactly what to do. With a stealer log like PegasusClaud, there is no notice at all, wich means the responsibility to check and react falls entirely on the individual.

How a Stealer Log Like PegasusClaud Gets Made

The process behind a stealer log starts with an infection, usually delivered through a cracked download, a fake software crack, or a malicious browser extension. Once active, the malware reads everything saved in the browser, passwords, autofill data, and cookies, then quietly sends it to a server the attacker controls. From there, the stolen information from many infected devices gets compiled into one file and named, in this instance, PegasusClaud.

Check If You Are Affected

Now that you know what a stealer log actually is, checking your own exposure should feel a lot less abstract. HEROIC's free scanner searches more than 400 billion (400B+) leaked records, PegasusClaud included, and shows you results in seconds.