There is a risk. At some point, you have to trust that the people you surround yourself with will not take your IP to a competitor.

I doubt you will blindly add folks to your team without establishing a relationship with them first. This relationship is the basis upon which the trust is built.

Further, you can explain a concept and your idea without giving away the "secret sauce".

I've seen this exact scenario play out over and over (and over and over) -- the fear of taking the leap ultimately keeps founders from ever taking action. Years later, they are still afraid their idea will be stolen. Meanwhile, the market has shifted, someone else has come up with the idea, and that fear has stalled them.

Unless you have developed the magic potion for creating world peace, you have a limited amount of time before someone else conjures the same idea (or at least close enough).

Get out there and make your idea worth something -- until you do, your idea has zero value.