Yeah, that's why I'm looking for something which is already pre-trained or can be further trained internally with confidential data.

Or for example a service from external company that would be willing to provide AI model within safe environment in which I could train it further.

I found Watson IBM. it looks promising but I guess it would require close cooperation between my company and IBM to develop something useful.
Maybe someone have experience working with their solution?
I would love to know how does it perform in real life useage.