I manage a small website. I went over the logs this morning and found a page reference on the site that should not have been there. It was of the format "/xmlrpc.php". I did a search for the term and found the XMLRPC website.
I didn't understand what was written on the website. It seems to be some new data transfer protocol that enhances the functioning of sites written in PHP. My site is written in PHP but I don't understand how this file could be added to my site without my permission.
Can anyone explain to me what this is all about? Thanks in advance.