These massive datasets aren't generated by the platforms themselves. They are typically compiled through:
If you see your favorite services listed in these "combos," it's a reminder to audit your own security.
: Using leaked data from one site to log into another.
While these lists are often marketed as "easy access," they carry significant risks for both the uploader and the downloader. 1. Malware and Tracing
Accessing accounts that do not belong to you violates Terms of Service and, in many jurisdictions, constitutes unauthorized access to a computer system. How to Protect Your Own Accounts