S3 GeoJson secure service to AGOL

[JeanineEGS]

I want to store a geojson file in a S3 and add it as content to our AGOL to then create a HFS and views for a Web app. 

I used the add content +, url, geojson method in the AGOL.

The file is https. 

I don't want this geojson to be publicly accessible. Is there a way to secure it , similar to when you add an arcgis server layer and it asks for credentials for the layer when you add it as content ?

You can't store the credentials in the url apparently.

Is there any documentation/ best practice/advice for this scenario?

I'm only using arc pro and agol at present.

thanks.