[Q] How to manage a virtual development team without putting your code at risk?

Hello everyone,

Me and a friend of mine are thinking of hiring 3-5 people to develop an app for us.

Our concern is how safe will our code be.

We already have some of the code that we started ourselves and we will like to keep it safe.
We are thinking of using Github repositories for the team to use to develop the app, this way they all have access to the code and are able to run the app and see results.

I have done this before with one other person and in order for the app to work well and for the person to see their results and what has been done they need the ENTIRE code for the app on their computer.

This is something that worries me and my friend because what if the people we will hire decide to keep the code after they are done or decide to duplicate it and whatnot.

How do we manage a 5 man team without putting our code at risk?


Please help me, we are using Google and no straight forward answers have come up so far.

thanks in advance.