How to develop safely?

Question

Encryption

1. Through what to send passwords to developers, through mail on the domain? If yes, how to protect. Or use some third party services?
2. Is it possible to communicate on Skype about some development details?
3. How to secure computers so that no one steals any data?
4. How to develop safely in general? I'm not talking about the server itself and its security, but about the environment through which we work (Windows, Mac, Linux).

Answer 1

1) You can make a private github repository for passwords, you can make a private folder on a Google drive, you can write in a chat in WoT, ... The safest thing is to take the developer to the office, and just print the passwords for him on A4.
2) Yes, if you are not Google some. Nobody cares what you develop)
3) Paranoia. You can block access to USB ports and the browser, but the developer is not a hamster in a cage) And you can still take a picture of anything. Moral - trust.
4) It's not entirely clear... what are we going to defend against? Antivirus + account password - not enough?)

Answer 2

Do you have a multi-billion dollar project there?
And the project of intercontinental significance?
Nonsense - no one needs your passwords for the spirit.
Disconnect from the network, and hire a specialist so that your authorization goes through confirmation via SIM CARD, and also through dateloscopy prints, and the third level is a personal password in all registers or as practiced in German banks by DNA

Answer 3

How to develop safely?

according to your security policy.
Taking into account possible threats and actions of intruders from which you want to get protection.