Today you can't grant access to shares outside of the share owner's organization - do you have any more information on your use case that might help us as we think through future improvements to data and access control in MotherDuck?
There isn't a way for users outside of your organization to view a dive within the app but you can generate embedded dive links if you have a place you want to host these. It is true that anyone with the link will be able to see the dive content and access the data referenced by the dive