These files are rarely the result of a single hack. Instead, they are usually compiled through:
A combo list is a plain-text file containing a large collection of username and password pairs (e.g., email@example.com:password123 ). 104K VALID COMBO.txt
: Using automated tools to test leaked passwords from one site against another (like using a LinkedIn password to try and log into a Netflix account). These files are rarely the result of a single hack
: In the context of "leaked" data, this usually claims that these credentials have been tested (or "checked") against specific services and confirmed to work at the time of the list's creation. How These Lists Are Created 104K VALID COMBO.txt