Why do I know the company I work for? Is it because I paid social security? But my password has been changed. Does that mean I can't go to a big company in the future?

Borrowed online loans? If you borrow online loans, they will look at your address book, and you can also know your company by calling people in the address book. Of course, it is not difficult for them to obtain information about your company through other illegal channels. Deal with it quickly, and don't affect normal life.