#1
As a newcomer, I'm looking to learn things about this field. About some of them, I researched and figured it out by myself. But some I couldn't.
So I thought why not ask from knowledgeable folks here. Yet I have many things to ask, here are three questions for now.


1. From where and how do accounts come?
These accounts were originally owned by people who paid directly to the relevant company for the service. After that, how do these end up being available across the web?

2. Why do social media accounts get cracked?
Unlike streaming services like Netflix, social media sites like Facebook are basically free to use. Yet why do they get cracked?

3. Why are cracking tools malicious?
Almost all the tools I've seen were found malicious. Why is that?


Anyone is welcome, and I would like to thank you in advance.