I have a practical question about organizing remote jobs. How do you deal with the security aspects of working remotely - especially if the work deals with sens

I have a practical question about organizing remote jobs. How do you deal with the security aspects of working remotely - especially if the work deals with sensitive data or code? In a regular office setting everyone is connected to a same network that sits behind a firewall (or in extreme cases it's just an intranet with no outside access) with tightly controlled permissions. How can it be translated to a remote environment? What about creating new accounts and credentials? Do I just email a password and tell them to change it after? Do I attach ssh keys in some other email? What to do if someone breaks in someone's remote work space in their home? How do I handle repairs? I'm sure plenty of people already figured out the answer to the above questions. It's just not something that I've seen discussed often.