We have changed rule sets for Mod_Security and we will no longer allow access to the xmlrpc.php file in wordpress installations.
Servers DS1 and SSD1 have been under brute force wordpress attacks, lately. This has caused the downtime on these 2 servers. We have updated security settings to block IPs quicker and implemented Mod_security rules to stop this from happening.
If you run a wordpress site it is always good to follow suggested security settings. It is a good idea to implement a plugin that will help deal with brute force attacks.
We just want to keep everyone in the know on what has been happening and what we are doing to fix it.