It means those credentials are in the public domain. If you use that password anywhere else, those accounts are at high risk.
You should immediately change your passwords for important accounts and enable Two-Factor Authentication (2FA) [4]. 135k Combo List.txt
Knowing the context (like an alert or a file you found) can help me give you more specific advice. It means those credentials are in the public domain
It looks like you’re referring to a which in the world of cybersecurity and data breaches is a text file containing a large collection of username (or email) and password combinations. 135k Combo List.txt