Correct!
we set the article to specific user group so they must login/register to view.
Now we are using JA Amazon S3 to load our images from S3, and it's working good, the thing is that if a registered/login user viewing the article and copying the the image url from the article, looged-out from joomla opening a new browser and paste this image url in it, the images are loading without required login
meaning joomla use login to view the article images loading from S3 anything is working, copy/getting the article images url, and opening in new browser, images are loading, even thought the user loogout, and we would like to prevent our images (presented only to login/registered users) url from Leeching
hope it's more clear now
Thanks.