Using these lists directly contributes to credential stuffing attacks and identity theft. 🛡️ How to Check if Your Data Was Leaked

If you get an alert that a password was leaked, change it immediately on that site and anywhere else you might have reused it.

A "combolist" is a text file containing thousands—or millions—of stolen email and password combinations. While they are often passed around hacker forums under the guise of "research" or "testing," interacting with them carries massive risks.

If you are worried that your credentials might be floating around in a "990K" combolist, take these immediate protective measures:

A free, trusted site where you can enter your email to see if it has appeared in any known public data breaches.

Instead of downloading dangerous, unverified zip files to see if your data is exposed, use secure, legitimate breach notification services.

Generate and store unique, complex passwords for every single site. Never reuse a password.