It was linked from https://resecurity.com/wp-content/uploads/ https://resecurity.com/wp-content/uploads/, which is a common and public URL, and anything uploade

It was linked from https://resecurity.com/wp-content/uploads/ https://resecurity.com/wp-content/uploads/, which is a common and public URL, and anything uploaded there is intended to be public. Of course, whoever uploaded it either wasn't aware or didn't think it through--maybe they thought nobody would ever visit that page. As you can see, the link is gone now.