I recently noticed that all of my sites have the file
Searching it led me to "Gain Control of WordPress by Exploiting XML-RPC", and also to "Drupal Core - Critical - Multiple Vulnerabilities - SA-CORE-2016-001".
I'm running Drupal 7.56.
Does this file pose a threat whatsoever to my site? Should I just delete it to be safe?
If I should keep it, what added benefit does it give me?