Well, that didn't format like i wanted. let's try a picture:

@Korina yes, thanks for the continued quick replies. While I appreciate that option, and i trust you to not intentionally share the data, I'm trying to determine if there is a way to make sure the data isn't exposed if you had a security incident. My thought on how i could do that is by using the KML option to use a reference to the data like this:

Random Placemark
      Here is some more kml content
      
        http://internalServer.corp/more_kml_content.kml
        once 
      

Or maybe i'm mis-reading your response. when you say " you need to upload the file into the browser." are you saying that even for the lower example above where it indicates "data is private" are you saying that the data is actually uploaded to the server but you are managing permissions such that i am the only one who can see it?
That's what i was trying to avoid if i can.

Yes, thanks i get that part. My problem is that i may not be allowed to share this data. So i'm trying to make sure i prevent it from being uploaded to your server. My thought was to take advantage of the ability that KML provides to use a reference to another file. So if i do that, does that data get loaded into the local memory of your web app? Or does it first upload the data to your server and then download it to the web browser.

If i use a KML with a network reference, does your webserver have to have access to that link? Looking to load files from my local network without having to upload them to your server.