517k File Leak Actually Hits 512,140 Real User Accounts

A file simply called 517k promised big numbers, and it delivered: 512,140 stolen credential records from a January 31, 2026 stealer infection.

Why This Is Dangerous

Even though the actual count is slightly under the '517k' headline number, half a million plaintext passwords is still a massive exposure event by any measure.

What Was Exposed

• Email addresses (512,140 unique accounts)
• Plaintext passwords with no encryption
• URLs tied to each compromised service

Why This Matters

Files this large rarely stay contained to one buyer, resellers typically break enormous logs like this into smaller regional or service-specific batches, meaning your credentials could circulate widely even beyond this initial release.

How Stealer Logs Work

Building a file with over half a million records takes a sustained botnet operation running for weeks or months, continuously harvesting passwords from newly infected devices. Sellers often round up the final count for marketing purposes, wich is likely why this file is branded '517k' despite containing 512,140 verified records.

Check If You Are Affected

HEROIC's free scanner checks your email against more than 400 billion (400B+) leaked records, including this 517k file. Don't asume the rounded number means you're safe, run the check and change any exposed passwords right away.