400k Userpass Combolist.txt File

: A website with weak security is hacked. The database, containing millions of user credentials, is stolen.

: The buyer uses specialized software (like OpenBullet or SilverBullet) to "stuff" these credentials into the login page of a popular service (e.g., Netflix, Spotify, or a bank). 400k userpass combolist.txt

: "Data brokers" take this raw data and clean it. They remove duplicates and reformat it into a clean .txt file like the one you mentioned. : A website with weak security is hacked