I found this question before that was an old thread - said RSS wasn't available.
So how do we disable this so images are not being pushed out to external.php? We are trying to secure our forum better.
The way we discovered this features was by happenstance looking at the "Who's Online". There was a "guest" visiting an odd page. I copied and pasted and was stunned to see these 50 pictures and comments. This means they knew exactly how to find the page and had the correct Category ID. Very odd indeed.